因为你的舌头是盖住琴孔的，你的嘴唇可以在吹嘴上施以更大的压力，所以在口腔内的也会获得更大的压力。
Because your tongue is blocking the holes, your lips can create much higher pressure on the mouth piece, and as a result there is higher pressure inside your mouth cavity.
便宜的琴连吹不响的可能都有，自然也会有压不了音的。
我在吹口琴的时候嘴唇经常会粘在琴的边缘，结果每次吹的时候都得准备一大碗水来润，灌得好饱啊，别人好像都没这个问题，是因为含口琴的方法不对吗？
My lips always sticks to the covers. So I have to drink a big bowl of water, and feel so full. Is it because I contain my harmonica wrongly?
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