Quadrisonic
a. 四声道的
🗣️ 情景例句
I'm on the top floor.
我在顶层。
I tried to call you, but the line was busy.
我试着给你打电话，但老占线。
Oxygen is widely used in ship repairs for cutting and joining metal plates or pipes.
在船舶修理过程中，常常使用氧气切割和焊接金属板或金属管。