Pneumistor
气动放大器
🗣️ 情景例句
What's happening with you these days?
你近来好吗？
I am pleased to say that we will be able to deliver the transport facilities you require.
很高兴告诉您你方要求的运输设备我方可以发货。
You must weigh it carefully.
你必须仔细地称一称重量。