1650s, "pleasing," from Latin complacentem (nominative complacens) "pleasing," present participle of complacere "be very pleasing" (see complacence). Meaning "pleased with oneself" is from 1767. Related: Complacently.
权威例句
1. It keeps you ticking over, stops you being complacent.
这使你进展缓慢,得意不起来。
2. We cannot afford to be complacent about our health.
对于健康我们决不能掉以轻心。
3. a dangerously complacent attitude to the increase in unemployment
对失业增加抱满不在乎的危险态度
4. We must not become complacent the moment we have some success.
我们决不能一见成绩就自满起来.
5. The winner's complacent smile annoyed some people.