Complementarities
(complementarity 的复数) n. 互补性, 互为补充\\n[经] 互补性
🗣️ 情景例句
I've only been waiting for an hour.
我已经等了一个小时了。
An evil chance seldom comes alone.
祸不单行。
There are a lot of people in the swimming pool.
游泳池里挤满了人。