2013年7月4日 · 不可吃 means "can't eat", perhaps it is inedible or passed expiry date. 不要 and 别 both mean "don't", but 不要 is stronger and more instructive than 别, example: 公共场所,请不要喧哗 (please don't make loud noises in public spaces) 不要 can be placed at the end of a sentence to mean "don't want". It can also be placed ...