Underframing
底层框架的材料或结构部件
🗣️ 情景例句
The salary is insufficient for our life.
这份薪水不够我们生活。
They imagine, what he is doing.
她们在猜他所做的事。
All at once, a rabbit came out of a hole.
突然，一只兔子从一个洞中跑了出来。