Interdeep
内渊; 山间拗陷
🗣️ 情景例句
What do you want to do after breakfast?
早餐后你想做什么？
Do you want to airmail it or not?
你想发航空信吗？
planes, or land vehicles----for it is something in between a boat and an aircraft.
飞机，或是陆上交通工具，因为它是介于船和飞机之间。