1. 松懈：slabstone 铺路石 | slack off 松懈 | slack suit 便装

2. 变慢：slack-off weight 下放时钻具重量 | slack-off 变慢 | slacken 松弛

3. 放松：18.opportunist n.机会主义者 | 19.slack off 放松 | 20.cocky adj.[口]骄傲自大的,自以为是的

4. 怠惰：自我再生Recover | 怠惰Slack Off | 生蛋Softboiled

1. 同 slacken off
Slack off means the same as slacken off .

2. - see slack 4

verb

1. become less in amount or intensity

e.g. The storm abated
The rain let up after a few hours

Synonym: abatelet upslackdie away