Orthosurface
正交曲面
🗣️ 情景例句
The weather really sucks today.
今天的天气真差。
Lost sleep
失眠
If he, or someone like him, were alive today, he might be able to tell us what to expect in the next fifty years.
如果他或是像他的什么人今天还活着的话，他大概可以告诉我们下一个50年后会发生什么事情。