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Methods Guinea pigs suffering from SOM were divided into three groups randomly, 6 for each group. Ectogenic surfactant, dexamethasone and 0.9% sodium chloride solution were injected into guiea pigs' tympanic cavities of group A, B and C respectively. The biochemical components and activity change of surfactant of Eustachian tube were analysed.

将分泌性中耳炎豚鼠动物模型随机分为A、B、C3组，每组各6只（12耳），分别用外源性表面活性物质、地塞米松和生理盐水注入豚鼠中耳腔内，然后观察豚鼠中耳变化；分析豚鼠咽鼓管内表面活性物质的生化成分和活性变化。

However, when the oropharyngeal membrane, which forms a sharp ecto/endodermal border, is broken, the fate of these cells is poorly known.

但当作为外胚层和内胚层界限的口咽膜破裂后这些牙齿形成细胞的发育知之甚少。

Hemangioma is the commonest benign tumor in infant and child. Although over half hemangioma occurs in the head and neck region, epiglottic hemangioma is a rare curiosity.

血管瘤是人类孩童时期最常见的良性肿瘤，超过一半的是发生於头颈部，但是发生於下咽的实属罕见，其中恰巧位於会厌的更为罕见。

We elicited a hiccup-like reflexby mechanical stimulation of the dorsal epipharynx in mechanicallyventilated cats.

我们通过机械刺激机械通气的猫的鼻咽背部来引发打嗝样反射。

Among the 224 cases, 50 cases received ligation of the external carotid artery, 35 cases received ligation of the ethmoidal artery, 139 cases were treated under nasal endoscopy, and 3 cases recevied nasopharyngeal packing.

224例顽固性鼻出血病例中，50例行颈外动脉结扎，35例行筛动脉结扎，鼻内镜下治疗139例，鼻咽填塞3例。

Pathogen detection was performed, including hemoculture, urine culture, sputum culture, nose swabs culture, throat swab culture, checking clinically important cytomegalovirus, EB-DNA and mycoplasma in blood, acid-fast bacilli and eumycete culture in sputum.

行病原学检测，包括血、尿、痰、鼻拭子、咽拭子培养，痰涂片+培养查真菌，抽血查CMV、EB-DNA及支原体，痰查抗酸杆菌。

But a child's eustachian tubes are narrower and shorter than those of an adult.

但是，儿童的咽鼓管管狭窄和更短的比成人。

It may be caused by viral or bacterial infection, by the production of unusually thick mucus, or by a problem with the Eustachian tubes.

它可能引起的病毒或细菌感染，所生产的不寻常厚厚的粘液，或由一个问题与咽鼓管管。

And children may suffer airplane air more easily than adults because their Eustachian tubes are small and easily blocked.

儿童比成年人更容易得飞机耳，因为他们的耳咽管小，容易堵塞。

In theory, this will help to keep the Eustachian tubes clear and allow mucus to drain from the middle ear, but again, this has not been proved to be an effective treatment for otitis media.

在理论上，这将有助于保持咽鼓管管清楚，并允许粘液流失从中耳，但再次，这并没有被证明是一种有效的治疗中耳炎。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。