咬紧牙关

bite hard───咬紧牙关

bites back───咬回；急忙收回要说的话；抑制

die hard───难改掉；难断气

bitter herb───苦菜花；苦草（制苦味酒和饮料用，逾越节家宴凉拌菜）

bit part───n.小角色

bite back───咬回；急忙收回要说的话；抑制

blow hard───n.吹牛大家；adj.吹牛的；唠唠叨叨的

It's ok to let the puppy gently mouth you in the beginning and only reprimand hard bites.───这是确定以让小狗轻轻咬一口，在开始时，只有谴责努力。

But the iron jaws still bite hard with the resolve, And the resolve itself bites hard the enemy.───但铁颚依旧紧咬着决心，而决心又始终紧咬着敌人。

teeth can be really sharp, I am watching my fingers every time when I try to clean his month, sometime he bites me very hard.───小奶牙真不假，俺最怕帮他清洁口腔，一不小心我也会被他烙上记号，洒泪史一筐。

When routine bites hard, and ambitions are low───当被反复的俗事噬咬时，激情随之低落