trap, catch, ensnare
这三个词都表示“抓住”。它们的区别是：
catch为一般用语,多指有力地、出其不意地,或机智地抓住正在飞奔或躲藏的人或物; trap和ensnare是指用机关或器具捉住, trap指用陷阱或圈套去捕捉; ensnare多指使用计谋而不是具体的陷阱。例如:
He ensnared the old lady into giving him all her savings.
他诱骗那位老妇人把全部积蓄都给了 他。
He lives by trapping animals and selling their fur.
他以捕捉野兽和出售兽皮为生。
arrest，capture，catch，seize，trap
这些动词均有“抓住，捕捉”之意。
arrest指根据法律或命令进行逮捕并予以监禁或拘留。
capture指通过武力或计谋等，战胜抵抗而捉住敌人或动物。
catch普通用词，指捉住跑动或隐藏中的人或动物，一般指活捉。
seize侧重指以突然、有力地动作迅速抓住或捉住。
trap多指诱捕。
The poor fox escaped from the trap at the cost of a leg.
那只可怜的小狐狸逃出了陷阱,却失去了一条腿.
——《简明英汉词典》
This type of trap uses no bait or other attractant.
这种陷阱不用诱饵或其他引诱物。
——《牛津高阶英汉双解词典》
Were you just trying to trap her into making some admission?
你刚才是想诱使她供认吗？
——柯林斯例句
You have fallen into the trap.
你们可上当了.
——《现代汉英综合大词典》
There is no greater thrill than to bluff a man, trap him and outfox him.
虚张声势吓唬别人，让他钻入圈套，用计将他击败，没有比这更刺激的事情了。
——柯林斯例句
They turned the barricade into a potential death trap by connecting it up to the mains.
他们给路障接上电源，让它变成了一个潜在的死亡陷阱。
——柯林斯例句
Suspecting nothing, he walked right into the trap.
他毫无觉察，径直走入陷阱。
《牛津高阶英汉双解词典》
Cheese is very good for luring a mouse into a trap.
奶酪是引诱老鼠上钩的极好的东西.
——《简明英汉词典》
The two cars cartwheeled horrifyingly into the sand trap at the first corner.
那两辆车在第一个拐弯处翻着跟头滚入了沙坑，场面十分骇人。
——柯林斯例句
Nancy knew she'd be a sitting duck when she raised the trap door.
南希明白，只要一打开天窗，她马上就会成为受攻击的目标。
——柯林斯例句
Journalists informed police who planted an undercover detective to trap Smith.
记者通知了警方，后者于是为诱捕史密斯而安插了一名卧底侦探。
——柯林斯例句
He was trying to decide whether the question was some sort of a trap.
他试图判断那个问题是不是个套。
——柯林斯例句
The team posed as drug dealers to trap the ringleaders.
该队队员装扮成毒品贩子，诱捕罪犯头目。
柯林斯例句
The hunter lured the fox into a trap.
猎人诱使狐狸落入陷阱.
《简明英汉词典》
a fox with its leg in a trap
被夹子夹住腿的狐狸
——《牛津高阶英汉双解词典》
You can catch these insects by tempting them to fly into a trap.
你可以引诱这些昆虫飞进罗网从而捉住它们.
《简明英汉词典》
The trap had cut deeply into the rabbit's flesh.
捕夹深深嵌入了兔子的肉里。
——《牛津高阶英汉双解词典》
Everyone is working flat out to try to trap those responsible.
每个人都在全力以赴，设法捉住那些罪魁祸首。
柯林斯例句
The cars blocking the exits could turn this place into a death trap.
那些堵住出口的汽车可能使这地方成为死亡陷阱。
《牛津高阶英汉双解词典》
To my immense gratification, he fell into the trap.
令我极为满意的是, 他中了圈套.
《简明英汉词典》
How many rabbits have you trapped in your special trap this week?
这个星期你用特制的捕兽器具捕捉了多少只兔子?
《简明英汉词典》
They were laying a trap for the kidnapper.
他们设下一个圈套引绑匪上钩。
柯林斯例句
One should learn from past mistakes so as to avoid falling into the same old trap again.
要从过去的错误中吸取教训,以免重蹈覆辙.
《现代汉英综合大词典》
The police knew that to trap the killer they had to play him at his own game.
警方知道要捉到凶手必须将计就计。
柯林斯例句
I would hate him to think I'm trying to trap him.
我不愿让他以为我是在给他设圈套。
柯林斯例句
We realized too late that we were caught like rats in a trap.
等我们发觉自己已成瓮中之鳖时已经太晚了。
柯林斯例句
The Government has found it's caught in a trap of its own making.
政府发现自己作茧自缚。
柯林斯例句
The Prime Minister, however, is now caught in a trap of her own making.
但是，首相现在却落入了她自己设下的圈套之中。
柯林斯例句
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