Opticalmechnical
光学机械
🗣️ 情景例句
Philip had to go back to the hospital. Philip
必须要回医院。
It's two o'clock.
两点钟。
Then we'd better pick the rest of these cabbages before the weather changes.
那么我们最好在天气变化之前就把其余的包心菜都收回来。