缰绳的英文：
halter
rein
trace

参考例句：

They had some trouble once over a halter, and, both being good haters, there was bad blood between them.
他们两人以前为了缰绳的事发生过一些龃龉，因为两人都是记仇记恨的人，所以宿怨不能消解。

an unbridled pony.
不戴缰绳的小马

To a greedy eating horse a short halter.
贪马须配短缰绳。

His jerkin on the reins only add to the horse's wildness.
他急拉缰绳，只使得马更加狂暴了。

Loose reins
松开的缰绳

You should strain at the reins.
你应该拉紧缰绳。

He pulled at the reins.
他使劲拉住缰绳。

flailed our horses with the reins.
用缰绳拍打我们的马

A rein joining the bit of one of a span of horses to the driving rein of the other horse.
缰绳系于共轭马中一匹的挽具与其它马的缰绳之间的缰绳。

The reins and the breeches of the groom are glittering white．
车夫的缰绳和裤子也又亮又白。

halter是什么意思：
n. 缰绳,笼头

We must lead an ox by the halter.
牵牛要牵牛鼻子。

You can pair the pants up with fitted shirts and halters.
你可以穿合身的衬衫和背心来搭配你的裤子。

Attach the snap to the upper halter ring on the off side.
把扣索扣在外侧位于稍上方的笼头环。

rein是什么意思：
n. 缰绳；控制，驾驭
v. 控制，驾驭；勒住（马）

He reined in to a jog.
他勒紧马缰绳使马缓步前进。

You should strain at the reins.
你应该拉紧缰绳。

A rein joining the bit of one of a span of horses to the driving rein of the other horse.
缰绳系于共轭马中一匹的挽具与其它马的缰绳之间的缰绳。

trace是什么意思：
n. 痕迹；踪迹；微量；迹线
v. 追溯；回溯；跟踪，追踪；描绘；探索；沿路走

trace contaminant
残余污染物

They are trying to trace the source of the trouble.
他们正设法找出这件麻烦事的起因。

They disappeared without leaving a trace.
他们不见了，没有留下一点痕迹。