there is a catch
口语常用，表示表面诱人但隐藏的困难或陷阱。
The offer sounds great, but there is a catch.
这个提议听起来不错，但其中有蹊跷。
抓住；接住
catches — plural of catch
捕获物；捕获量；蹊跷；陷阱；隐患；接球游戏；挂钩；闩；扣；听清；领会
the act of seizing, capturing, or catching something, especially a thrown ball
抓住或捕获的动作。
The act of seizing or capturing.
接住运动中的物体,尤其是球。
The act of catching an object in motion, especially a ball.
注意到、理解或听到。
The act of noticing, understanding or hearing.
接球游戏。
The game of catching a ball.
被捕获或抓住的东西。
Something which is captured or caught.
制动装置,尤指防止东西打开的搭扣。
A stopping mechanism, especially a clasp which stops something from opening.
因强烈情绪而出现的嗓音停顿。
A hesitation in voice, caused by strong emotion.
隐藏的困难,尤其在交易或谈判中。
A concealed difficulty, especially in a deal or negotiation.
痛性痉挛；肌肉在不习惯姿势下使用时突然疼痛。
A crick; a sudden muscle pain during unaccustomed positioning when the muscle is in use.
音乐或诗歌的片段。
A fragment of music or poetry.
已发芽并开始生长的作物。
A crop which has germinated and begun to grow.
一种幽默轮唱曲,各声部逐渐追上；通常由男性演唱,常带粗俗歌词。
A type of humorous round in which the voices gradually catch up with one another; usually sung by men and often having bawdy lyrics.
副歌；歌曲中每节重复的一行或几行。
The refrain; a line or lines of a song which are repeated from verse to verse.
在球落地前接住击出的球,导致出局。
The act of catching a hit ball before it reaches the ground, resulting in an out.
就接球能力而言的球员,尤指接球好的人。
A player in respect of his catching ability; particularly one who catches well.
桨与水面的首次接触。
The first contact of an oar with the water.
屏息,类似轻微咳嗽。
A stoppage of breath, resembling a slight cough.
抓住的过往机会；片段。
Passing opportunities seized; snatches.
轻微的回忆；痕迹。
A slight remembrance; a trace.
The detective made a quick catch of the fleeing suspect.
侦探迅速抓住了逃跑的嫌疑人。
用法提示：这里'catch'作名词，表示'抓捕'的动作或结果。
Be careful, there's a catch in this contract.
小心，这份合同里有个陷阱。
用法提示：这里'catch'作名词，表示'隐藏的困难或陷阱'。
The fishermen returned with a huge catch of tuna.
渔民们带着一大网金枪鱼回来了。
用法提示：这里'catch'作名词，表示'捕获的鱼的数量'。
口语常用，表示表面诱人但隐藏的困难或陷阱。
The offer sounds great, but there is a catch.
这个提议听起来不错，但其中有蹊跷。
用于说明具体的不利条件，后接同位语从句。
The catch is that you have to book two weeks in advance.
问题是你必须提前两周预订。
多用于体育中，也可指警察抓捕嫌疑人。
She made a spectacular catch in the outfield.
她在外场做出了一次精彩的接球。
较正式，强调成功控制；catch更口语化
特指执法机关抓捕犯罪嫌疑人
正式法律用语，不如catch常用
常用于财产或违禁品，不用于人
grammar · medium
易错句子He made three catch during the game.
正确表达He made three catches during the game.
当catch作名词表示‘接球、捕获物’时是可数名词，复数形式为catches。中文‘三次接球’没有单复数形态变化，导致学习者误用原形，但英语中数词后必须用复数catches。
grammar · medium
易错句子This phone is cheap, but there is catch: it has no battery.
正确表达This phone is cheap, but there is a catch: it has no battery.
此处catch意为‘陷阱、隐患’，为可数名词单数，前面需要不定冠词a。中文‘有个陷阱’中的‘个’即对应冠词，不可省略。这是因中文量词省略导致冠词缺失的常见错误。
catch 作名词可指“抓捕行为”，也可指“捕获量、隐患”；capture 只指抓住或占领的动作/结果，不能表示数量或暗藏的问题。
catch 作名词表示“隐患”时，强调的是表面不错但暗藏的不利条件；trap 强调故意设置、用来诱骗或捕捉的圈套或装置。
catch 作名词可指“捕到的东西/捕获量”，范围较广；haul 强调一次捕捞、运输或抢劫所得的总量，常见于鱼获或赃物。
一大收获；重要的捕获物
The fisherman came back with a big catch.
渔夫带着一大收获回来了。
隐藏的陷阱；意想不到的困难
Be careful; there might be a hidden catch in the contract.
小心；合同里可能有隐藏的陷阱。
一网鱼；捕获的鱼
Today's catch of fish was smaller than yesterday's.
今天捕获的鱼比昨天少。
理想的结婚对象；很棒的收获
Everyone says she is a great catch.
大家都说她是理想的结婚对象。
声音中的哽噎或停顿
He spoke with a catch in his voice, holding back tears.
他说话时声音哽噎，强忍着泪水。
捕鱼或抓捕时常用的工具，与catch的捕获意义相关。
法律上抓捕罪犯的行为，与catch指逮捕行为相关。
引诱物，用于诱捕，与catch的捕获手段相关。
意外的障碍或问题，与catch指隐藏的困难相关。
指可能的对象，与catch指理想的结婚对象相关。
第22条军规（指进退两难的困境）
It's a catch-22: you need experience to get a job, but you can't get experience without a job.
这是一个第22条军规：你需要经验才能找到工作，但没有工作就无法获得经验。
当日捕获的鱼（或当天的特色菜）
The restaurant's menu features the catch of the day, which is always fresh.
这家餐厅的菜单上有当日捕获的鱼，总是很新鲜。
理想的对象（尤指婚恋方面）
He's smart, kind, and successful—definitely a catch.
他聪明、善良且成功——绝对是个理想的对象。
第22条军规（指无法摆脱的困境）
It's a catch-22: you need experience to get the job, but you need the job to get experience.
这是个两难困境：你需要经验才能得到工作，但你需要工作才能获得经验。
《猫鼠游戏》（又译《逍遥法外》）
The movie 'Catch Me If You Can' is based on a true story.
电影《猫鼠游戏》基于真实故事改编。
Dictionary facts from ECDICT, WIKTIONARY.