Echinococci
echinococcus的复数
🗣️ 情景例句
Typing is easy once you get the hang of it.
一旦你掌握诀窍，打字就很简单。
The years teach much which the days never know.
学问集年而成，而每日不自知也。
No, that's not my bike.
不，那不是我的自行车。