Apical placentation
顶生胎座式
🧩 词语组成解析
a. 顶端的\\n[医] 尖的, 尖端的
[解、动]胎盘形成
🗣️ 情景例句
I had a busy day. I'm done.
我今天很忙，现在精疲力尽。
To plan a mountain climbing expedition.
计划登山探险。
Which boy?
哪个男孩？