an efferent
efferent 作为可数名词，常与不定冠词连用。
The surgeon identified an efferent.
外科医生识别出一根输出管。
输送离开的管道或水流。
输送离开的管道或水流。
A duct or stream that carries away.
The efferent carries signals from the brain to the muscles.
输出管将信号从大脑传递到肌肉。
用法提示：这里“efferent”作为名词，指传递信号的神经纤维。
In the reflex arc, the efferent sends motor commands to the effector.
在反射弧中，输出管向效应器发送运动指令。
用法提示：“efferent”在此处表示反射弧中传导运动信号的神经。
Damage to the efferent can disrupt voluntary movement.
输出管受损会扰乱随意运动。
用法提示：“efferent”用作名词，指代负责传出功能的神经束。
efferent 作为可数名词，常与不定冠词连用。
The surgeon identified an efferent.
外科医生识别出一根输出管。
表示特定器官或组织的输出管。
The efferent of the gland carries secretion away.
该腺体的输出管将分泌物输送出去。
grammar · medium
易错句子The efferent nerves carry signals to the brain.
正确表达The afferent nerves carry signals to the brain.
Efferent 意为传出（从中枢向外），而 afferent 意为传入（向中枢）。此处描述向大脑传递信号，应使用 afferent。
grammar · medium
易错句子The efferent were damaged in the accident.
正确表达The efferents were damaged in the accident.
Efferent 作为名词时是可数名词，复数形式需加 -s。句中主语为复数概念，应使用 efferents。
“efferent”指输出（离开中枢），而“afferent”指输入（进入中枢），两者方向相反。
“efferent”是输出管或传出神经，而“effector”是接受神经信号并产生反应的器官或细胞。
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