1
a plexus of [nerves/blood vessels/lymph vessels]
这是最常用的可数用法，表示多个神经或血管交织成的网状结构。
A plexus of nerves lies beneath the skin.
皮肤下面有一丛神经。
丛；神经丛；血管丛
先理解核心含义，再看它在真实句子里的用法。
丛；神经丛；血管丛
a network of intersecting blood vessels, nerves, or lymph vessels
A plexus of nerves lies beneath the skin.
皮肤下面有一丛神经。
神经、血管或淋巴管相互吻合或交织而成的网络。
A network of anastomosing or interwoven nerves, blood vessels, or lymphatic vessels.
结构或系统中各部分或要素交织组合而成的网状物。
An interwoven combination of parts or elements in a structure or system.
用于完整表达一组量之间关系的方程组。
The system of equations required for the complete expression of the relations which exist between a set of quantities.
The nervous system contains many plexuses that join nerves from different parts of the body.
神经系统包含许多将身体不同部位的神经连接起来的神经丛。
During the anatomy class, we examined a plexus of blood vessels in the hand.
解剖课上，我们观察了手上的一个血管丛。
The surgeon carefully avoided the nerve plexus while operating near the spine.
外科医生在脊柱附近做手术时小心避开神经丛。
这是最常用的可数用法，表示多个神经或血管交织成的网状结构。
A plexus of nerves lies beneath the skin.
皮肤下面有一丛神经。
解剖学中的许多固定名称采用这一形式，如 brachial plexus（臂丛）、celiac plexus（腹腔丛）。
The solar plexus is easily affected by a blow to the abdomen.
腹部受到击打时，太阳神经丛很容易受影响。
Not this
There are several plexus in the abdomen.
Use this
There are several plexuses in the abdomen.
plexus 是可数名词，复数形式为 plexuses（或 plexi），不能像 sheep 一样单复数同形，所以表示多个神经丛时要用 plexuses。
Not this
The nerves plexus around the blood vessels.
Use this
The nerves form a plexus around the blood vessels.
plexus 是名词，意为“丛”，不能用作动词。表达“形成丛”时要用动词短语 form a plexus，因此这里不能用 plexus 作谓语。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
太阳神经丛
The blow hit him right in the solar plexus.
那一击正好打在他的太阳神经丛上。
臂丛
The brachial plexus supplies nerves to the arm and hand.
臂丛向手臂和手部提供神经。
腹腔丛
Pain may radiate from the celiac plexus to the back.
疼痛可能从腹腔丛放射到背部。
腰丛
The lumbar plexus is formed by the first four lumbar spinal nerves.
腰丛由前四个腰脊神经构成。
脉络丛
The choroid plexus produces cerebrospinal fluid in the brain.
脉络丛在大脑中产生脑脊液。
神经丛
A nerve plexus is a network of intersecting nerves.
神经丛是相互交叉的神经网络。
比喻突然的沉重打击；令人泄气的事
The news that the project was cancelled was a real kick in the solar plexus.
项目被取消的消息真是让人大受打击。
Use plexus naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记忆：联想“complex（复杂）”中的“plex”，plexus 就是神经、血管交错成的网状“丛”。
语域：formal 常见场景：医学文献、解剖学教材、学术报告 该词属于医学术语，多用于专业文献、教材或学术讨论，日常口语中比较少见。
No common word rhymes exactly with plexus /ˈpleiksəs/. Words spelled with '-plex' (complex, perplex, duplex) look alike but pronounce that chunk as /-pleks/ with a short /e/, whereas plexus has /-pleɪksəs/ with a long /eɪ/. Nexus /ˈnɛksəs/ and reflex /ˈriːfleks/ also look similar but differ in vowel.
Dictionary facts from ECDICT, WIKTIONARY.