be weak (at/in) something
She is weak at math.
她不擅长数学。
虚弱的；无力的
weakest — superlative of weak
缺乏力量(通常是力量)或能力。；体力不足的；无法承受巨大重量、压力或应变。；过于稀释的；淡而无味的；无力的,柔软的。
lacking physical strength
缺乏力量(通常是力量)或能力。
Lacking in force (usually strength) or ability.
体力不足的
wanting in physical strength
无法承受巨大重量、压力或应变。
Unable to sustain a great weight, pressure, or strain.
过于稀释的；淡而无味的
overly diluted; thin and insipid
无力的,柔软的。
Limp, soft.
(用于元音或音节)发音轻或无重音的
(used of vowels or syllables) pronounced with little or no stress
无法抵挡诱惑、紧迫、劝说等；容易被打动、感动或克服；易接近；脆弱。
Unable to withstand temptation, urgency, persuasion, etc.; easily impressed, moved, or overcome; accessible; vulnerable.
对某人或(较少见)某物有强烈、不可抑制的情感爱；因这种爱而情感上受影响。
Having a strong, irrepressible emotional love for someone or (less often) something; sentimentally affected by such love.
稀释的,缺乏味道或效力。
Dilute, lacking in taste or potency.
显示特定类型的屈折变化,包括:
Displaying a particular kind of inflection, including:
轻音,发音时力度较小或标记性较弱。
Lenis, pronounced with less force or less markedness.
在溶液中不能完全电离成阴离子和阳离子。
That does not ionize completely into anions and cations in a solution.
与核衰变相关的四种基本力之一。
One of the four fundamental forces associated with nuclear decay.
具有狭窄的逻辑后果范围；适用范围狭窄。(通常与暗示它的强陈述对比。)
Having a narrow range of logical consequences; narrowly applicable. (Often contrasted with a strong statement which implies it.)
由于或表明缺乏判断力、辨别力或坚定性；不明智；因此,愚蠢。
Resulting from, or indicating, lack of judgment, discernment, or firmness; unwise; hence, foolish.
没有说服力；没有理由或事实支持；不持久。
Not having power to convince; not supported by force of reason or truth; unsustained.
缺乏活力或表现力。
Lacking in vigour or expression.
不普遍或无效力,或不被感觉为普遍；不强效；微弱。
Not prevalent or effective, or not felt to be prevalent; not potent; feeble.
趋于较低价格的。
Tending towards lower prices.
缺乏对比度的。
Lacking contrast.
After the long illness, she still felt too weak to walk up the stairs.
大病之后，她仍然虚弱得无法上楼。
用法提示：此处 weak 作形容词，表示身体虚弱、没有力气。
AI contextual example
His voice was so weak that I could hardly hear him.
他的声音很微弱，我几乎听不见。
用法提示：weak 在这里形容声音微弱无力。
AI contextual example
The puppy was the weakest of the litter and needed extra care.
这只小狗是那窝里最弱的，需要格外照顾。
用法提示：此处用最高级 weakest，表示体质最弱。
AI contextual example
She is weak at math.
她不擅长数学。
He was weak from hunger.
他因饥饿而虚弱。
weak修饰名词时通常表示‘不牢固的’或‘不充分的’。
They presented a weak argument.
他们提出了一个不充分的论据。
比 weak 程度更重，常指因病或年老而极度虚弱
强调身体脆弱、易生病，多用于老人或体质差的人
可用于人或物，强调易碎、易受伤，语气较客观
多用于声音、味道、光线等，指微弱模糊；在身体方面指头晕无力
grammar · medium
易错句子He has a weak.
正确表达He has a weakness.
形容词“weak”不能直接作宾语名词，应用名词形式“weakness”。
grammar · medium
易错句子She is more weak than her sister.
正确表达She is weaker than her sister.
单音节形容词“weak”的比较级应加“-er”变为“weaker”，而非使用“more”。
直接反义词，指身体有力或意志坚定
强调力量或影响力大，与weak在能力方面相对
指身体状况良好，与weak在身体健康方面相对
强调体格强健、精力充沛，与weak在体力方面相对
音同形似，但“week”指时间单位（周），而“weak”是形容词（虚弱的），词性和意义完全不同。
同根词，但“weaken”是动词（削弱），而“weak”是形容词（虚弱的），不可互换词性。
同根词，但“weakly”是副词（虚弱地），修饰动作；而“weak”是形容词（虚弱的），修饰名词或作表语。
弱点
Everyone has their weak points.
每个人都有他们的弱点。
薄弱环节
The weak link in the system caused the failure.
系统中的薄弱环节导致了故障。
疲软的经济
The weak economy led to high unemployment.
疲软的经济导致了高失业率。
弱信号
The weak signal made it hard to hear the radio.
弱信号使得收音机很难听清。
淡茶
I prefer strong coffee to weak tea.
比起淡茶，我更喜欢浓咖啡。
不充分的证据
The case was dismissed due to weak evidence.
由于证据不充分，此案被驳回。
与weak类似，形容容易损坏或易碎，常用于描述体质或物品。
强调因年老或疾病而缺乏力量，与weak在体力方面相关。
虽常指精美，也可指身体娇弱或状况脆弱，与weak有联系。
指声音、光线或信号微弱，属于weak在感知层面的体现。
常用于形容老人或病人身体虚弱，与weak在健康状况上同属一个语义场。
膝盖发软，激动或紧张得站不稳
She felt weak at the knees when she saw her favorite singer.
当她看到她最喜欢的歌手时，她觉得膝盖发软。
弱点，薄弱环节
Math has always been my weak spot in school.
数学一直是我在学校的弱项。
薄弱环节，最弱的一环
The outdated security system is the weak link in our defense.
过时的安全系统是我们防御中的薄弱环节。
心灵固然愿意，肉体却软弱。
I wanted to exercise, but I felt too weak to get out of bed.
我想锻炼，但觉得太虚弱了，起不了床。
弱者死，强者生。
He was too weak to survive the harsh winter.
他太虚弱了，无法挨过严冬。
发长 /iː/ 音 (如 sea, tea)
Same pattern, same sound
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.
Watch the sound change