Regioselective
[机] 特定选择的
🗣️ 情景例句
He jumps from one job to another.
他经常换工作。
When are you going to swear off cigarettes?
你打算什么时候发誓戒烟？
Nigel is our new next-door neighbour.He's a pilot.
奈杰尔是我们新搬来的隔壁邻居。他是个飞行员。