Word · CEFR B2 · Frequency #10300
sag
下垂；下陷
The state of sinking or bending; a droop.
- 1.
The state of sinking or bending; a droop.
下沉或弯曲的状态；下垂。
- 2.
The difference in elevation of a wire, cable, chain or rope suspended between two consecutive points.
导线、电缆、链条或绳索悬挂在相邻两点之间的高度差。
- 3.
The difference in height or depth between the vertex and the rim of a curved surface, specifically used for optical elements such as a mirror or lens.
曲面顶点与边缘之间的高度或深度差,特用于镜子或透镜等光学元件。
- 4.
A place where the surface (of a seat, the earth, etc) sinks or droops, like a depression or a dip in a ridge.
表面(如座椅、地面等)下沉或下垂之处,类似凹陷或山脊上的低洼。
凹陷；低洼处；垂度；弛度；矢高；下沉或弯曲的状态；下垂。；导线、电缆、链条或绳索悬挂在相邻两点之间的高度差。
In use
There is a noticeable sag in the middle of the mattress.
The bridge developed a slight sag after the heavy trucks crossed.
The shelf has a sag from too many books.
a sag in [sth]
There is a sag in the wire.
电线有一处下垂。
the sag of [sth]
The sag of the shelf is noticeable.
架子的下垂很明显。
sags in [sth]
The fabric has sags in several places.
布料有多处下垂。
Connections
Collocations
- cable sag
- 电缆垂度
- The design must allow for cable sag under heavy loads.设计时必须考虑重载下电缆的垂度。
- sag between supports
- 支撑点之间的下垂
- The sag between supports increased after the storm.暴风雨后，支撑点之间的下垂增大了。
- sag in the middle
- 中间下陷
- There is a noticeable sag in the middle of the old bed.旧床中间有明显下陷。
- sag of the shoulders
- 肩膀下垂
- The sag of his shoulders told us he was exhausted.他肩膀下垂，说明他精疲力竭。
- sag of the line
- 绳线的垂度
- Measure the sag of the line before tightening it.收紧绳子之前先测量一下绳线的垂度。
Synonyms
Learner notes
Memory Tip
把sag想成‘撒’下去：重物压着，中间‘撒’出弯垂（sag），如绳子、沙发下垂。
Context & Register
语域：mixed 常见场景：日常描述、工程/物理、光学设计 作名词时，通常指下垂或弯曲的状态；在工程和光学领域多用于表示导线、镜面等的垂度或弛度。整体语气偏中性，但具体专业场合会更正式。
Pronunciation & Spelling
All listed words end in the /æɡ/ sound and rhyme with sag. Beware lookalikes: 'sage' /seɪdʒ/ and 'saga' /ˈsɑːɡə/ look similar but do not rhyme.
Usage priority
Collins 词频等级为 1，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 ECDICT, WIKTIONARY.