须根的英文：
fibril

adventitious fiber root
不定须根

The light brown skin was firm and clear under the gray stubble
那浅褐色的皮肤在灰色的须根之下是坚实而清晰的。

Any of the threadlike fibrils that make up the contractile part of a striated muscle fiber.
肌原纤维一种线状的纤维，它组成了有条纹肌肉的可收缩部分

An electrical device used to counteract fibrillation of the heart muscle and restore normal heartbeat by applying a brief electric shock.
自动减颤器通过短暂简单的电击缓解心的纤颤，并使其恢复正常的心跳的一种带电装置

What is the status of lidocaine for the treatment of ventricular fibrillation( VF)/ pulseless ventricular tachycardia( VT)?
利多卡因在室颤（F）无脉性室性心动过速（t）疗中处于何种地位？

What is the status of bretylium for the treatment of ventricular fibrillation( VF)/ pulseless ventricular tachycardia( VT)?
溴苄胺在室颤（F）无脉性室性心动过速（t）疗中处于何种地位？