B1 [ I or T ] to use your teeth to cut into something or someone（用牙）咬

[ I ] When a fish bites, it swallows the food on the hook (= curved piece of wire) at the end of a fishing line.（鱼）上钩，吞饵

If an insect or snake bites you, it injures you by making a small hole in your skin.咬（伤）；叮咬；蛰伤

[ I ] to have a bad or unpleasant effect产生不良影响，起不良作用

[ I ] to show interest in buying something有兴趣买…

B2 [ C ] the act of biting something咬；叮；蛰

B2 [ C ] a sore place or injury where a person, an animal, or an insect has bitten you咬伤；叮痕

[ S ] the act of a fish biting the hook (= curved piece of wire) on the end of a fishing line so that it is caught（鱼）吞饵

[ U ] If food has bite, it has a sharp or strong taste.强烈的味道，辛辣的味道

[ U ] a powerful effect强烈的影响