Mathfile
[计] 数学文件
🗣️ 情景例句
If you don't think it's any good, Please say so.
如果你认为写得不好，请照实说。
Woe to him that is alone.
孤独的人最苦恼。
and beyond six or seven they are worthless.
如果超过六七天，天气预报就没有了任何价值。