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1. 护发素
A conditioner is a substance which you can put on your hair after you have washed it to make it softer.

2. 衣物柔顺剂
A conditioner is a thick liquid which you can use when you wash clothes in order to make them feel softer.

3. see also: air-conditioner

1. exercise that conditions the body

e.g. farm work can be a good conditioner

2. a substance used in washing (clothing or hair) to make things softer

3. a trainer of athletes