Dicyclohexylurea
二環己[基]脲
??? 情景例句
Did you get some rest on your vacation?
假期中休息的怎么樣？
Once a knave,ever a knave.
一次成無賴，永遠是無賴。
Yes. Could you ask him to call me, please?
可以。請你告訴他給我打個電話，好嗎？