Word · Frequency #263
leads
铅
leads is the plural of lead.
a soft heavy grey metal that is easily melted and shaped; its chemical symbol is Pb
- 1.
A heavy, pliable, inelastic metal element, having a bright, bluish color, but easily tarnished; both malleable and ductile, though with little tenacity. It is easily fusible, forms alloys with other metals, and is an ingredient of solder and type metal. Atomic number 82, symbol Pb (from Latin plumbum).
一种重而柔软、无弹性的金属元素,具有明亮的蓝色,但易于失去光泽;既可锻又可延展,但韧性较小。易熔,与其他金属形成合金,是焊料和铸字金属的成分。原子序数82,符号Pb(来自拉丁文plumbum)。
- 2.
The act of leading or conducting; guidance; direction, course
引导或率领的行为;指引;方向或路线。
- 3.
an advantage held by a competitor in a race
比赛中竞争者的优势
- 4.
A plummet or mass of lead attached to a line, used in sounding depth at sea or to estimate velocity in knots.
附在绳子上的铅锤或铅块,用于测量海洋深度或估算速度(节)。
- 5.
Precedence; advance position; also, the measure of precedence; the state of being ahead in a race; the highest score in an incomplete game.
领先;超前位置;亦指领先的程度;赛跑中处于前方的状态;未完成比赛中的最高分。
- 6.
a soft heavy toxic malleable metallic element; bluish white when freshly cut but tarnishes readily to dull grey
一种柔软、重、毒性强的可锻金属元素;新切割时呈蓝白色,但容易氧化变为暗灰色
- 7.
A thin strip of type metal, used to separate lines of type in printing.
用于印刷中分隔行的薄型金属条。
- 8.
The situation where a runner steps away from a base while waiting for the pitch to be thrown.
跑垒员在等待投球时离开垒包的情形。
- 9.
evidence pointing to a possible solution
指向可能解决方案的证据
- 10.
Vertical space in advance of a row or between rows of text. Also known as leading.
行前或行间的垂直间距,亦称行距。
- 11.
The act or right of playing first in a game or round; the card suit, or piece, so played
在游戏或一轮中首先出牌的权利或行为;所出的花色或牌张。
- 12.
Sheets or plates of lead used as a covering for roofs.
用作屋顶覆盖的铅板或铅片。
- 13.
The main role in a play or film; the lead role.
戏剧或电影中的主角;主要角色。
- 14.
A roof covered with lead sheets or terne plates.
以铅板或镀锡铁板覆盖的屋顶。
- 15.
The actor who plays the main role; lead actor.
饰演主角的演员;主演。
- 16.
A thin cylinder of graphite used in pencils.
铅笔中使用的石墨细芯。
- 17.
The person in charge of a project or a work shift etc.
项目或轮班等的负责人。
- 18.
X-ray protective clothing lined with lead.
内衬铅的 X 射线防护服。
- 19.
A channel of open water in an ice field.
冰原中的开阔水道
- 20.
A lode.
矿脉
- 21.
The course of a rope from end to end.
绳索的走向
- 22.
A rope, leather strap, or similar device with which to lead an animal; a leash
牵动物用的绳子或皮带;牵绳
- 23.
In a steam engine, the width of port opening which is uncovered by the valve, for the admission or release of steam, at the instant when the piston is at end of its stroke.
蒸汽机中阀门开启的宽度
- 24.
The distance of haul, as from a cutting to an embankment.
运输距离
- 25.
The action of a tooth, such as a tooth of a wheel, in impelling another tooth or a pallet.
齿轮齿推动另一齿或棘爪的动作
- 26.
Hypothesis that has not been pursued
未被追踪的假设
- 27.
Information obtained by a detective or police officer that allows him or her to discover further details about a crime or incident.
侦探或警察获取的有助于发现案件细节的信息
- 28.
Potential opportunity for a sale or transaction, a potential customer.
潜在的销售或交易机会,潜在客户
- 29.
Information obtained by a news reporter about an issue or subject that allows him or her to discover more details.
新闻记者获取的有助于发现更多细节的信息
- 30.
The player who throws the first two rocks for a team.
为队伍投掷前两个石块的选手
- 31.
An important news story that appears on the front page of a newspaper or at the beginning of a news broadcast
报纸头版或新闻广播开头的重要新闻
- 32.
The axial distance a screw thread travels in one revolution. It is equal to the pitch times the number of starts.
螺纹在一次旋转中移动的轴向距离
- 33.
In a barbershop quartet, the person who sings the melody, usually the second tenor.
理发店四重唱中唱旋律的人,通常是第二男高音
- 34.
The announcement by one voice part of a theme to be repeated by the other parts.
一个声部宣布的主题,由其他声部重复
- 35.
A mark or a short passage in one voice part, as of a canon, serving as a cue for the entrance of others.
一个声部中的标记或短段,作为其他声部进入的提示
- 36.
A primary synth, often composed of square, sawtooth, triangle or sine waveforms.
主要合成音,通常由方波、锯齿波、三角波或正弦波组成
- 37.
The excess above a right angle in the angle between two consecutive cranks, as of a compound engine, on the same shaft.
复合发动机中两个连续曲柄之间超过直角的角度
- 38.
The angle between the line joining the brushes of a continuous-current dynamo and the diameter symmetrical between the poles.
直流发电机刷子连接线与极对称直径之间的角度
- 39.
The advance of the current phase in an alternating circuit beyond that of the electromotive force producing it.
在交流电路中,电流相位超前于产生它的电动势的现象。
线索;头绪;领先;优势;领导;引导;指挥;先手;首先出牌;离垒;离垒距离
In use
The runner gained an early lead in the race.
The detective followed a promising lead in the case.
We need more leads before we can solve the mystery.
he took the lead at the last turn
the children were playing with lead soldiers
the police are following a promising lead
the trail led straight to the perpetrator
Connections
Collocations
- lead poisoning
- 铅中毒
- Old houses can expose children to lead poisoning from chipped paint.老房子可能会让儿童因脱落的油漆而面临铅中毒的风险。
- lead paint
- 含铅油漆
- Workers must wear masks when removing lead paint.工人在清除含铅油漆时必须佩戴口罩。
- lead pipe
- 铅管
- The old building still has lead pipes in the basement.这座老建筑的地下室里仍有铅管。
- lead ore
- 铅矿石
- The region was once mined for lead ore.这个地区曾经开采过铅矿石。
- lead apron
- 铅围裙
- The dentist placed a lead apron over my chest before the X-ray.拍X光片前,牙医在我胸前放了一条铅围裙。
- lead exposure
Learner notes
Memory Tip
铅(lead)读/lɛd/,像中文'累的':铅块沉重,搬起来很累。别与读/liːd/的'带领'混淆。
Context & Register
语域:neutral 常见场景:化学/材料科学、工业制造(焊料、铸字) 作名词且读作 /lɛd/ 时,通常指金属铅。这是日常和中性的说法,常见于化学、工业和材料相关话题;在正式文献和一般叙述中均适用。
Grammar Note
名词,可数,有复数形式 leads。作为'金属铅'时不可数。
Pronunciation & Spelling
这些词都含有 -ead 拼写,但读音不同:head、bread、dead 中的 -ead 读 /ɛd/,与金属 lead(/lɛd/) 同韵;bead、read、plead 中的 -ead 读 /iːd/,与表示“领先”的 lead(/liːd/) 同韵。注意 read 也有过去式读音 /rɛd/,与 head 同韵。
High-value vocabulary
该词属于 Oxford 核心词汇,值得优先掌握常见搭配和句型。
Usage priority
Collins 词频等级为 2,建议结合例句记忆,而不是只背中文释义。
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY, WORDNET.