Diisocyanate
[機] 二異氰酸鹽
??? 情景例句
Unless in uniform, he doesn't look like a policeman.
除非穿上制服，要不他看起來不像警察。
He who handles a nettle tenderly is soonest stung.
與惡人交往而講仁義，必受其害。
What time will the next train leave?
下一班火車什么時候開？