Convention equipment
[计] 常规设备
🧩 词语组成解析
🗣️ 情景例句
and help a lot of other people.
且对其他很多人有益。
While you were writing letters,I was reading a book.
当你正在写信时，我正在读一本书。
Please ask her to call me back when she's back.
她回来时请让她给我回个电话。