Instroke
排气行程, 压缩行程, 内向冲程
🗣️ 情景例句
I think I'm a cooperative worker.
我认为我具有合作精神。
To read a book
读书
Now she's holding it for Jim. Jim is climbing up the ladder.
现在她在给吉姆扶着梯子。吉姆正在爬上梯子。