Hider
[计] 封闭多边形
🗣️ 情景例句
Yes. I do.
是的， 我有疑虑。
This is my second trip to the United States, and I really enjoy staying here.
这是我第二次美国之行，我很喜欢这里。
Their sleeping bags were warm and comfortable, so they all slept soundly.
睡袋既暖和又舒服，所以，他们都睡得很香。