Substructural
a. substructure的变形
🗣️ 情景例句
You should use 'officer' to address a policeman.
你应该用 'officer' 来称呼警察。
I'll let you keep the book for the time being, but I'll want it back next week.
这本书我暂时借给你，吵过下星期我就要跟你要回来。
Here and here. And I can only move my arm as much as this.
这儿和这儿。我只能这样摆动手臂。