Submicrogram
a. 次(或亚)微克(量)的
🗣️ 情景例句
Absolutely.
绝对。
May I ask you a question?
我可以问一个问题吗？
I'm tired, said my younger brother as he climbed up to join me.
“我累了，”我弟弟边说边爬上岩石和我汇合。