Pneumistor
气动放大器
🗣️ 情景例句
Just make the few changes I suggested and your letter will be perfect!
只要改动我提到的个别地方，你的信就会很完美了。
He who rides a tiger is afraid to dismount.
骑虎者难下。
Where are the cups?
茶杯在哪儿呢？