Conicoid
n. 二次曲面
🗣️ 情景例句
we won't be there
我们将无法
Don't forget to put stamps on the letter.
不要忘记在信封上贴邮票。
I agree with you. We've got to do something about pollution. It's getting worse.
我同意你的看法。我们得对污染采取措施了。污染越来越严重了。