Trophoblast
[医] 滋养层
🗣️ 情景例句
in a horse and carriage.
坐马车。
Americans are hight mobile, and therefore may find it difficult to became deeply involued with other.
美国人的流动性，大，因此你会发现和他人深交很难。
Let's go for a walk，shall we?
咱们出去走走，好吗？