twitches

短暂的小动作(有时不自主)；痉挛

A brief, small (sometimes involuntary) movement out of place and then back again; a spasm.

狗牙根(Elymus repens,一种常被视为杂草的草)

couch grass (Elymus repens; a species of grass, often considered as a weed)

一端有孔的棍子,通过绳圈套住马的上唇或耳朵并扭紧以使其安静

A stick with a hole in one end through which passes a loop, which can be drawn tightly over the upper lip or an ear of a horse and twisted to keep the animal quiet during minor surgery.

由神经元单次最大脉冲引起的骨骼肌短暂收缩反应

A brief, contractile response of a skeletal muscle elicited by a single maximal volley of impulses in the neurons supplying it.

矿脉突然变窄几乎消失

The sudden narrowing almost to nothing of a vein of ore.

为了观察稀有鸟类而进行的旅行

A trip taken in order to observe a rare bird.