Underboarding
垫板, 衬板
🗣️ 情景例句
Oh, not at all.
噢 一点也不。
We are thinking of expanding into the Chinese market.
我们想把生意扩大到中国市场。
I wonder.In England, each person speaks a different language.
我感到奇怪。在英国，人们各自说着一种不同的语言。