A gulper eel can eat an animal larger than itself and accommodate it in an expandable stomach.
它能一口咽下比它还大一只海底动物并且调节它胃大起来。
A gulper eel can eat an animal larger than itself and accommodate it in an expandable stomach.
它能一口咽下比它还大一只海底动物并且调节它胃大起来。
Expandable metal stent placement was the most effective therapy for tracheostenosis induced by nodular goiter.Patients with tracheostomy cannula placement were at high risk of severe infection.
人工气道重建后均可缓解气管狭窄,以气管内支架置人术效果最佳,气管切开套管置入次之。
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