" You know it by heart, we can just ask you."

“反正你已经记得滚瓜，我们问问你就可以了。”

" I know every word of it, I tell you, " said Eustacia decisively.

“跟你说吧，我对这出戏记得滚瓜，”游苔莎果断说。

Joe knew the lecture so well, he could mouth the words along with her.

乔对这套说辞已经滚瓜，都能跟着她一起背出来。

It was like a perfectly delivered line by a skilled actor.

他话就像一个炉火纯青演员背得滚瓜一句台词。

You'll notice that once you do this transition over and over again, then in the words, it's like easy peasy.

你会注意到一旦你把这种转换练得滚瓜，那么在单词中，对你来说就是小菜一碟了。

Obviously, I had this all perfectly memorized and rehearsed for today, right?

显然，我今天全都背得滚瓜，排练好了，对吧？

I thought you knew it by heart.

兰达尔：我以为你背得滚瓜呢。

It is better to repeat a formula to death than to move on too soon.

与其过续下一步，不如把一个公式练到滚瓜。

And I know that off by heart because it's in my mum's downstairs loo.

而且我背得滚瓜，因为那句话就贴在我妈妈楼下厕所里。

You would honestly think that I would know that biography off by heart.

你真会以为我会把那篇传记背得滚瓜。

Among the items found on Wilder's body after his death was a copy of The Collector.

在怀尔德死后从他身上找到物品中，有一本《收藏家》。这本书已经翻得起了毛边，显然他几乎已经背得滚瓜。

You also don't see anything other than the four walls of your cell that you've memorized at that point.

你那时看到只有牢房四面墙，那些墙你都已经背得滚瓜了。

Should you have the opportunity to take part in a school drama one day, you will probably try to memorize your lines to perfection.

万一有一天你有机会参与学校话剧演出， 你可能会设法将台词背得滚瓜。

" To have something down cold" means to have it memorized, to know it perfectly so that you don't make any mistakes.

“掌握得滚瓜” 意味着已经将某件事记住了， 知道得很完美， 不会出任何错误。

" Well, Barty knows the rule book back to front, " said Bagman, beaming and turning back to Karkaroff and Madame Maxime, as though the matter was now closed.

“嘿，巴蒂把章程背得滚瓜。”巴格曼说，脸上绽开笑容，回过头来望着卡卡洛夫和马克西姆夫人，似乎事情已经圆满解决了。

I had to fly from Minneapolis to Los Angeles recently, and like most travelers, I've almost memorized the standard safety announcement made by the flight attendants.

最近我从明尼阿波利斯飞往洛杉矶，和大多数旅客一样， 我几乎已经把空乘人员做标准安全广播背得滚瓜了。

When I had shown this to Herbert and had put it in the fire—but not before we had both got it by heart—we considered what to do.

我把这封信给赫伯特看了， 然后把它投入火中——不过在此之前， 我们俩都已经把它背得滚瓜了——我们商量该怎么办。

(laughs) and the problem with that - Yeah Basically I came across those videos Five vocabulary words which would help you example: plethora and stuff and it was like I had literally by heart kicked them.

（笑）而这个问题是——嗯 基本上我看了那些视频 五个词汇表 里面有一些词例如：plethora（大量）之类 我简直把这些词背得滚瓜。

She still really knew them, if she troubled to think: but she was no longer so " pat" in her lesson as to be sure of reeling them off in the right order at a moment's notice and without thinking.

要是她肯费心想一想，她其实还是知道，但她对自己功课已不再背得滚瓜，遇到人家一问，未能不假思索一字不差背出来。