harness

Compared meaning: to control or direct something (verb).

比较义项：驾驭、控制（动词）。

• rein

  Emphasizes holding back or restraining something, often in the phrase "rein in", used for curbing excessive behavior, spending or emotion; carries a sense of pulling back.

  强调勒住、约束，常用短语“rein in”，用于克制过度的行为、支出或情绪，带有“拉住、收敛”的意味。

  The government moved quickly to rein in rising inflation.

  政府迅速采取行动，控制不断上升的通货膨胀。

• harness 本词

  Emphasizes putting a force, resource or ability to productive use, often with abstract nouns like energy or skill; carries a positive sense of channeling something useful.

  强调把某种力量、资源或能力用于产生有益的结果，常与“能源”“才能”等抽象名词搭配，带有“善加利用”的积极意味。

  Engineers are learning to harness solar energy to power entire cities.

  工程师正在学习利用太阳能为整座城市供电。

Rein and harness both mean to control a force or behavior. Rein stresses holding back or restraining, often to curb excess. Harness stresses putting a force or resource to good, productive use. Harness's noun meaning, horse equipment, is not compared here.

这两个词在此义项上都可表示对某种力量或行为加以控制、驾驭，但语气不同：rein 强调“勒住、约束”，常用于抑制或克制过度的言行；harness 强调“善加利用”，把某种力量或资源转化为有益的产出。这里不比较 harness 作为名词“马具”的用法。