Underboarding
垫板, 衬板
🗣️ 情景例句
He says he'll get up at six tomorrow morning, but he'll never make it.
他说他明天早上要6点起床，但他是绝对做不到的。
One party is entitled to cancel the contract if the other side cannot execute it.
如果一方不履行合同，另一方有权取消合同。
There are plenty of interesting places to visit.
那儿有很多游览胜地。