Bicellulate
具二细胞的
🗣️ 情景例句
Please take your places.
请大家就座。
No one is answering the phone..
没有人接电话。
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，