Circumtractor
[医] 环形拉钩, 环形牵引器
🗣️ 情景例句
We are going upstairs to set up Grandpa's room.
我们要上楼收拾一下爷爷的房间。
We are in the same boat, we both failed the exam.
我们都一样，考试都没及格。
he identifies himself with its centre of gravity, its mass, its weight;
他把自身和物体重心、质量、重量融为一体。