Camming
凸轮系统
🗣️ 情景例句
No smile, no surprise.
不笑 ，就没有惊喜。
The whole class is in a heated discussion.
全班同学正在热烈讨论。
It threatened to surround him completely, but Tazieff managed to escape just in time.
眼看就要将他团团围住，但塔捷耶夫还是设法及时逃离了。