Pyrethrone
[化] 除蟲菊酮
??? 情景例句
Good morning, Mr. Tao.
早上好，陶先生。
He laughs best who laughs last.
誰笑在最后，誰笑得最好。
Mary is still writing letters. She's been writing letters all day.
馬力還在寫信，她寫了一整天的信。