Mulde
向斜层, 凹地
🗣️ 情景例句
Tomorrow morning after lifting weights,I'll try aerobics.
明早举完重，我去试试有氧运动。
I meet the boy whose aunt is a nurse.
我遇到那个男孩的姑妈是护士。
I agree. Which museum would you like to visit?
我同意。你想参观哪个博物馆呢？