Rebreather
再生式氧气系统; 唿吸器; 换气器
🗣️ 情景例句
Thanks, Mom.
谢谢，妈。
All things are difficult before they are easy.
凡事都是先难后易。
I had been asked to drive in heavy traffic and had done so successfully.
按照要求在车辆拥挤的路上驾驶，我圆满地完成了。