In seconds, the echo of the sound is analyzed to determine the presence of middle ear fluid.
在数秒钟内，回音就被用来分析和决定中耳内的液体存在状态。
These cells work by detecting movements in the fluid that fills the canals of the inner ear.
这些细胞通过探测充满内耳道的液体的移动来发挥功能。
You have a middle ear infection when germs get into the middle ear and the area fills up with fluid (or pus), which contains germ-fighting cells.
当微生物进入中耳引起感染，小气袋里就会因此充满脓液，这些脓液里包含了抗菌细胞。
There is also more likely to be pus or fluid coming out of the ear.
也有更容易被脓或液体走出来的耳朵。
Get her hearing checked and make sure there is no fluid on the ears or ear infections.
带她去做下耳部检查，看看她耳内有没有积液，或耳部有没有感染。
You will then know when to consult the doctor and once your child is diagnosed with an ear infection, you can monitor whether the fluid is gone and the ear infection is clearing up.
一旦您的孩子发现了有耳道感染，您就可以通过这个宝贝来观察液体是否消失和耳道感染是否清除。
You will then know when to consult the doctor and once your child is diagnosed with an ear infection, you can monitor whether the fluid is gone and the ear infection is clearing up.
一旦您的孩子发现了有耳道感染，您就可以通过这个宝贝来观察液体是否消失和耳道感染是否清除。
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