To be accustomed to a stable and smooth life; to live in a state of constant peace and favorable circumstances.
他从小生活在一个安逸的环境中，习惯了安常履顺的日子，不太懂得奋斗的艰辛
Having grown up in a comfortable environment, he was accustomed to a smooth and uneventful life and didn't quite understand the hardships of striving.
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