Placentome
胎盘及其附属物
🗣️ 情景例句
How'd you guess?
怎么晓得？
Do not sell the bear's skin before you have caught the bear.
熊未到手休卖皮（勿过早乐观）。
I'm sorry, I don't know. You'd better ask that policeman.
对不起，我不知道。你最好问问那位警察。