be prepared for any contingency 以备不虞
build irrigation works so as to have no worries about drought or flood; 兴修水利,水旱无虞
be secure against hunger and cold 无冻馁之虞
Yu Yunwe 虞允文
each trying to cheat the other 尔虞我诈
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)