Alkyle
[医] 烃基化物
🗣️ 情景例句
Americans consider it extremely bad manners to be late.
美国人认为迟到是一种极不礼貌的做法。
I'm Henry Lee. I am a system engineer for IBM.
我叫亨利.李，是IBM的一名系统工程师。
but more often than not, the greater part of the journey is spent on roads with few service stations and too much traffic.
但旅行的大部分时间都花在路上，而且只有很少的服务设施，交通也很拥挤。