hour的首字母h不发送气音。
关注发音并感受一下发送气音。
Pay special attention to the sound and feel of the aspiration.
送气管线的一头与供气系统连接；
One end of the gas supply pipeline is connected with the gas supply system;
街角那一家店正在发送气球。
从嘴或风箱中往外送气。
To expel a current of air, AS from the mouth or from a bellows.
如果煤气管漏气，你必须关闭送气管，否则很危险。
If the gas blows back you must turn off the supply, as it is dangerous.
如果煤气管漏气，你必须关闭送气管，否则很危险。
If the gas blows back you must turn off the supply, as it is dangerous.
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