Biotest
生物监测
🗣️ 情景例句
Affectionately, Uncle John.
爱你的，约翰叔叔。
It was eleven o'clock when he finally showed up.
他最后露面时，已经11点钟了。
a ticklish business which is achieved with the aid of two tame elephants roped to the captive on either side.
这是一件棘手的事，需要在它两侧拴上两头驯服的大象才能完成。