strictly avoid boasting and exaggeration 力戒浮夸
take warning from sth.; take sth. as an object lesson 引以为戒
go on a vegetarian diet; 戒荤腥
stop drinking; 戒酒
attain the full status of a monk or nun 受戒
diamond ring 钻戒
牛津高阶第八版
美国韦氏词典
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维基百科 (自由的百科全书)