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他穿着一件蓝色丝绸背心和平脚短裤。He was wearing a blue silk singlet and boxer shorts.她穿着三角背心和短裤。She was dressed in a halter top and shorts.男人的三 件套 服装包括上衣 、 长裤和背心.A man's three - piece suit includes a jacket, trousers, and a waistco...

“背心”的拼音为：bèi xīn...