adopt a rigorous approach in one's studies; 治学谨严
Shut the window tight. 把窗户关严了。
sternly refute; 严加批驳
You seem too strict with your young ones. 你对孩子管得似乎太严了。
my father 家严
Yan Fu 严复
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)