词典释义：
双语例句
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The "boomy" theory is that when times are good, we get overconfident and spend freely, then retreat into a risk-averse shell when times get tough.
“牛气哄哄型”理论认为，当形势大好时，我们会过于自信，花起钱来大手大脚，而当形势变得艰难时，我们就会缩进厌恶风险的壳里。