Complementariness
补充性
🗣️ 情景例句
I guess I ruined your day.
我想我扫了你今天的兴。
Won't you buy me a newspaper on your way home?
回家的时候，替我买份报纸好不好？
They will also be building new roads and a special railway line.
他们还将修筑一些新的道路和一条铁路专线。