伸手不見五指可能有點誇張，但黑夜裏不跟緊前方發生掉隊完全可能。掉隊了把耳朵貼地麵聽聲音定方位。

來源: 老商於 2019-07-23 17:03:19 [舊帖] [給我悄悄話] 本文已被閱讀：次

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