Underboarding
垫板, 衬板
🗣️ 情景例句
The number's no longer in service.
这个号码现在是空号。
He equipped all his children with a good education.
他使所有的子女都受到良好的教育。
I got up early and bought thirty-seven cards.
我早早起了床，买来了37张明信片。