1. 猛拉;猛拧;猛拽
    If you wrench something that is fixed in a particular position, you pull or twist it violently, in order to move or remove it.

    e.g. He felt two men wrench the suitcase from his hand...
           他感觉有两个人在使劲拽他手里的手提箱。
    e.g. He wrenched off his sneakers...
           他使劲儿脱下运动鞋。

2. 挣脱;挣开
    If you wrench yourself free from someone who is holding you, you get away from them by suddenly twisting the part of your body that is being held.

    e.g. She wrenched herself from his grasp...
           她从他手里挣脱开来。
    e.g. He wrenched his arm free...
           他把手臂挣脱开来。

3. 扭伤(关节)
    If you wrench one of your joints, you twist it and injure it.

    e.g. He had wrenched his ankle badly from the force of the fall.
           他因摔倒而严重扭伤了脚踝。

4. (离别时的)痛苦，愁楚
    If you say that leaving someone or something is a wrench, you feel very sad about it.

    e.g. I always knew it would be a wrench to leave Essex after all these years...
           我一直心里清楚过了这么多年后离开埃塞克斯会非常痛苦。
    e.g. Many of the things are of great sentimental value and it is going to be a wrench parting with them...
           其中很多东西都具有重要的情感价值，令人难以割舍。

5. 扳钳；活动扳手
    A wrench or a monkey wrench is an adjustable metal tool used for tightening or loosening metal nuts of different sizes.

wrench在线翻译

6. 作梗;阻挠
    If someone throws a wrench or throws a monkey wrench into a process, they prevent something happening smoothly by deliberately causing a problem.

wrench的翻译

    e.g. Their delegation threw a giant monkey wrench into the process this week by raising all sorts of petty objections.
           他们的代表团本周提出了各种细枝末节的反对意见，极在地阻挠了进程。