Underlayment
n. 地毯衬,屋面衬垫材料
🗣️ 情景例句
We're in the phone book.
我们家的电话号码 可以在电话簿上查到。
Poverty is not a disgrace,but theft is a disgrace.
贫穷不可耻，偷窃乃足羞。
and a very firm hand must be employed in the early stages.
因此开始阶段需要有一位强有力的老手。