cow [kaʊ] n. 奶牛，母牛；母兽 vt. 威胁，恐吓 例句： The cow is expected to calve next week. 这头母牛预期下周生小牛。

Why buy the cow when you can get the beef for free? 如果你可以免费得到牛肉为什么要去买一头牛呢？ Our cow is carrying again. 我家的母牛又怀胎了。