Ranber
薄层腐殖质土
🗣️ 情景例句
Good night, Susan.
再见， Susan。
I know the boy whose father is a dentist.
我知道那个男孩的父亲是牙医。
A burst of activity associated with the laying of submarine cables soon confirmed the Challenger's observation that many parts of the ocean were two to three miles deep,
海洋中很多地方可深达两三英里，