Centroidal
重心的
🗣️ 情景例句
What material is this made from?
这是什么材料做的？
There is a phone booth in the corner.
在转角处有个电话亭。
The girl, tears streaming down her face, begged to be allowed to slip into the guard's van.
女孩泪流满面，央求让她不声不响地到押车员车厢里去算了。