not to be outdone idiom
不甘落后,不服输,不甘示弱
not wanting someone else to do something better than you
Pat was wearing an outrageous purple dress, so, not to be outdone, I put on my new gold suit. 帕特穿了件前卫惹火的紫色连衣裙,我不甘示弱,穿上了那套新买的金色套装。
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