一桶

a bucket of

→ 一
phrase Rare #25,613
a bucket of 桶 can refer to a bucket, pail, or barrel, depending on the container and context.
CH: 我买了一桶水。
EN: I bought a bucket of water.

“按五十磅一桶的标准吗?”

Is that the standard for a 50-pound barrel?

然后呢,最让我讨厌的事就是,我们得为那个说谎的人浪费一桶油。

And then, what I hate most is that we have to waste a whole tank of gas on that liar.