Polychlorosubtilin
多氯枯草菌素
🗣️ 情景例句
Don't be such a grouch.
不要总是牢骚满腹。
How do I address you?
我怎么称呼你？
Speculations about is nature have been going on for literally thousands of years,
人们对睡眠作用的种种猜测，确实有数千年之久。