改进放射治疗设野技术，使用有效药物，采取鼓膜置管和鼓膜切开等方法对防治分泌性中耳炎的发生有一定用处，但其耳瘘发生率很高。
Improvement of radiotherapy technique, effective drug, ventilation tube insertion and myringotomy may be helpful in prevention of secretory otitis. But the incidence of otorrhea is very high.
这种非人性化的模型虽然有一定的用处，但是它们只能限定范围内起效。
Such dehumanized models are useful, but they work only within limited parameters.
这种非人性化的模型虽然有一定的用处，但是它们只能限定范围内起效。
Such dehumanized models are useful, but they work only within limited parameters.
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