Benzylbenzene
[機] 二苯甲烷
??? 情景例句
I really want to go back to work,
我真的想回去工作，
He that never climbed never fell.
不向上爬的也不會下跌。
namely 6 million million miles.) Radio waves also travel at the speed of light,
即6萬億英里）。無線電波也是以光速傳播的。