Dibromoethane
二溴乙烷
??? 情景例句
He keeps himself fit by running 5 miles every day.
他每天跑五公里以保持身體健康。
It's not four o'clock.
還沒到四點呢。
As complaints must be made in writing, the Ombudsman receives an average of 1,200 letters a year.
由于意見均需用書面形式提出，司法特派員每年平均收到1，200封信。