cow
n.母牛;奶牛;菜牛;肉牛;雌象，雌鲸(及某些大型雌性动物);婆娘;娘儿们
v.恐吓;吓唬;威胁;胁迫
第三人称单数： cows；复数： cows；现在分词： cowing；过去式： cowed；过去分词： cowed
例句：
Some children develop a sensitivity to cow's milk.
有的孩子对牛奶过敏。
Don't have a cow ─ it's no big deal.
别发火，没什么大不了。
She was easily cowed by people in authority.
她很容易被有权势的人吓住。