c. 1600, "a bargainer," agent noun from condition (v.). Meaning "an agent that brings something into good condition" is from 1888; since c. 1960 usually in reference to hair care products. For about 20 years before that, it often was short for air conditioner.
实用例句
1. Using a fabric conditioner will make clothes easier to handle and iron.
使用织物柔顺剂会使衣服打理、熨烫起来更为容易。
来自柯林斯例句
2. The air-conditioner thrummed.
空调嗡嗡作响。
来自柯林斯例句
3. an all-in-one shampoo and conditioner
二合一洗发护发剂
来自《权威词典》
4. Use conditioner regularly to make your hair soft and manageable.
经常使用护发剂来使你的头发柔软而且易于梳理。
来自《权威词典》
5. This new style of air conditioner is noiseless.