Caving
n. 洞穴探险
✅ 同义词
🗣️ 情景例句
It's going to be a piece of cake.
这种事不费吹灰之力。
I get up before six o'clock every day.
每天我六点前起床。
Can I see your licence, please?
请让我看看你的车证好吗？