Huff, clamp the mestus of bag when put the windpipe into it, then huff to open up the fully to bottom in order to avoid the material overflow from the bag if the it is not opened fully.
吞吐，夹袋道时，把气管进入它，然后气呼呼地打开全下以避免袋溢料如果它不是完全打开。
Huff, clamp the mestus of bag when put the windpipe into it, then huff to open up the fully to bottom in order to avoid the material overflow from the bag if the it is not opened fully.
吞吐，夹袋道时，把气管进入它，然后气呼呼地打开全下以避免袋溢料如果它不是完全打开。
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