Coboundary
[计] 上边缘
🗣️ 情景例句
I'm very glad to meet you.
很高兴认识你。
It's been 5 years since I last saw you.
我已5年没见你了
We had been in the hat shop for half an hour and my wife was still in front of the mirror.
我们在这家帽店已经呆了半个小时了，而我的妻子仍在镜子面前。