求翻译：去年寒假，我和几个朋友去台北玩。在搭乘地铁的途中，我们遇见了一件惊人的事，当时我正低着头看手机，突然十几个女生下半身只穿了条内裤是什么意思？

Last year, the winter vacation, some friends and I went to Taipei to play. By subway on the way, we met an amazing thing, when I head down to see the phone, and suddenly a dozen girls lower body wearing only underwear

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Last year winter vacation, I and several friends went to Taibei to play.Is travelling by the subway on the way, we met an astonishing matter, at that time I was lowering the head look at the handset, the sudden several female student lower part of the body has only put on the strip underpants

Last winter, I play with a few friends to go to Taipei. Take the subway on the way, we met an amazing thing, at that time I was seen with his head down the phone, suddenly a dozen girls had lower body wearing only underpants