Instroke
排气行程, 压缩行程, 内向冲程
🗣️ 情景例句
You can feel very proud of your grandson, Mr. Stewart.
你可以为你的孙子感到非常的骄傲， Sewart先生。
That radio's pretty loud. Could you turn it down, please?
收音机太响了，你能把声音开小一点吗？
Is that all? It seems worse than a cold.
仅此吗？看似比感冒重吧。