There was some sludge at the bottom of the tank.

油箱底有油泥。

《牛津词典》

There are also indications that a major tank battle may be shaping up for tonight.

也有迹象表明今晚很可能有一场坦克大战。

《柯林斯英汉双解大词典》

There is only so much fuel in the tank and if you burn it up too quickly you are in trouble.

油罐里只有这么多燃料了，如果你用得太快，就有麻烦了。

《柯林斯英汉双解大词典》