Trapezoids
(trapezoid 的复数) n. 梯形, 不规则四边形\\n[医] 斜方形的; 小多角骨
🗣️ 情景例句
Will I be able to receive the goods by the end of September?
我可以在9月底以前收到货吗？
Yes. And another thing, would you mind not making long distance calls?
是的。还有一件事，请你别打长途电话了，好吗？
Imagine a pen attached to the weight in such a way that its point rests upon a piece of paper on the floor.
假定把一支笔拴在重物上，笔尖落在地板上的一张纸上，