rat是長元音還是短元音

rat是短元音: [ræt] 

The rat gnawed a hole through the wall.

耗子在牆上啃了一個洞。

The dog was worrying a rat.

那條狗撕咬著一隻老鼠。

The dog scented a rat.

那狗嗅出有老鼠的氣味。

The dog nosed out a rat.

那隻狗聞到了老鼠的氣味。

They said they'd help but they've ratted on us.

他們説要幫助我們，可是他們食言了。

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！