Underboarding
垫板, 衬板
🗣️ 情景例句
You've lost your family.
你无家可归了。
I'm twenty-one years old.
我21岁。
In this much-travelled world, there are still thousands of places which are inaccessible to tourists.
在这个旅游频繁的世界上，仍有成千上万个游人足迹未至的地方。