耳朵感染是怎样引起的？中耳和咽喉之间的通道叫耳咽管。
Between your middle ear and your throat there is a passage called the eustachian (say: yoo - stay -she-un) tube.
对于大一些的孩子，虽然耳咽管会更长一些，可以更好的发挥作用，但是还是会出现问题。
The eustachian tubes get longer and usually work better in older kids, but they can still cause problems.
当孩子小的时候，尤其是三岁以下的儿童，耳咽管非常短，不能有效地将微生物阻隔在外面。
When you were young, especially before you turned 3, the eustachian tubes were very small and less able to keep germs out.
有证据表明如果瓶喂配方奶给平躺着的宝宝，配方奶可能进入宝宝的耳咽管和中耳，进而引起感染。
There is good evidence that if baby is given a bottle of formula while lying flat, the formula can get into the Eustachian tubes and middle ear and cause an infection.
通常情况下耳咽管都是关闭的，但当我们需要平衡气压时我们需要打开它。
Normally the Eustachian tube is closed, so in order to equalize the pressure we need to open it.
结论耳咽管功能的光通量测定方法灵敏、迅速和客观，是一种很有希望的判定手段。
Conclusion The luminous flux determination method for assessing Eustachian tube function is sensitive rapid, and objective, so it is a hopeful appraisal measure.
根据设想的数学模型，探讨了耳咽管开闭功能参数的计算方法。
Based on a supposed mathematical model, the calculation of parameters of opening function of Eustachian tube was elaborated.
由乔的中耳通往他的咽喉的耳咽管是肇事者。
The eustachian tube, leading from the middle ear to Joe's throat, is the culprit.
由乔的中耳通往他的咽喉的耳咽管是肇事者。
The eustachian tube, leading from the middle ear to Joe's throat, is the culprit.
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