Distancer
测距仪
🗣️ 情景例句
And this is Alexandra Pappas.
这位是Alexandra Pappas。
She fears Tom will drop out of school.
她担心汤姆会休学。
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。