n.變節(jié)者；鼠；卑鄙的人

v.捕鼠；背叛；偷竊

He was regarded as a rat. 大家叫他變節(jié)者/叛徒。

The dog was worrying a rat. 那條狗撕咬著一只老鼠。

The dog nosed out a rat. 那只狗聞到了老鼠的氣味。

Now I can see why people say he is such a rat. 現(xiàn)在我知道了為什么人們說他是卑鄙小人了。

But you promised to help us, you rat! 可是你答應過要幫我們的忙，你這言而無信的小人！

The little boy likes to rat. 這個小男孩喜歡捕鼠。

They said they'd help but they have rat on their friend. 他們說他們會幫忙的，但他們卻背叛了朋友。

Why did he rat out on his friends? 他為什么背棄了朋友們呢?

We should not rat on our promises. 我們不應違背諾言。

rat用作名詞時意思是“鼠”,轉化為動詞意為“捕鼠”,引申可表示“背叛”“告發(fā)”“食言”。

rat只用作不及物動詞,在口語中常與介詞on連用。

rat的過去式和過去分詞均為ratted。