Pyrethroid
n. [化]擬除蟲菊酯,合成除蟲菊酯
??? 情景例句
and a new paint job in the schoolrooms.
和重新油漆教室。
Merry is he that hath nought to lose.
人無所失，不亦樂乎。
Though they are running out of food and drink, the men are cheerful and confident that they will soon get out.
雖然他們的食物和飲料都快消耗盡了，但這些人的心情很好，堅信他們很快就會出去。