Polyphyletic theory
[医] 多元论, 多元学说(血细胞)
🧩 词语组成解析
a. [生]多源的
🗣️ 情景例句
You're most welcome.
不用客气。
The beginnings of all things are small.
万事开头小。
About once a month. Not too often, because neither of us has much time. We both have too much work to do.
大约每月一次。不太经常写信，因为我俩的时间都很紧。我们都有做不完的事。