We must not become complacent about progress.

我们决不能因进步变得自满。

《牛津词典》

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。

《新英汉大辞典》

Over the last five years our marketing departments have become complacent.

在过去的5年时间里，我们的市场部门非常得意。

youdao

WHO chief Chan urges people not to become complacent because of the relatively mild nature of the H1N1 pandemic.

VOA: standard.2009.12.29

Please don't, if you are up here, become complacent because a month from now we will have another test.

如果你考得不错的话，请不要自满,因为在一个月后我们将还有一次测试。

麻省理工公开课 - 固态化学导论课程节选

We cannot become complacent when competitor nations work to improve their own entrepreneurial ecosystems.

FORBES: The Time Is Now To Fix Rules On High-Skilled Immigration

However, because several years can occur between fat-tail events, investors become complacent about option-writing.

ECONOMIST: Buttonwood

The IMF does not want any politician to become complacent as their forecats for 2011 is increased.

FORBES: Our Globe Is Growing Good, Says IMF