Mathfile
[计] 数学文件
🗣️ 情景例句
Keep quiet, I'm trying to get some work done.
请安静，我要处理一些工作。
I sometimes stay up till midnight.
我有时候熬到半夜。[一般现在时]
But the historian attempting to reconstruct the distant past is always faced with a difficult task.
但是，历史学家企图重现遥远的过去可是一项艰巨的任务，