Plerematics
内容单位学
🗣️ 情景例句
I never slept.
我总睡不着。
Will you please repeat it?
请你重说一遍好吗？
Fortunately, however, ancient men made tools of stone, especially flint,
然而， 幸运的是，远古人用石头制作了工具，特别是用燧石，