Biofuels
(biofuel 的复数) [机] 生物燃料
🗣️ 情景例句
He is,
没有错。
How many passengers were on the train?
在火车上有多少旅客？
I hired a car the day after landing and bought a comprehensive book of maps,
我下飞机后租了一辆车，并买了一本详尽的地图册。