This is not the sound of keys in a bag.

This is not這不是the sound of keys in a bag包包裡鑰匙的聲音。

In older British English, rattling in front of a story — very often rattling good — means the story is lively and exciting: it moves along, and you want to keep reading. A rattling good yarn is an old, friendly way to say a really enjoyable tale.

In older British English在比較舊式的英式英語裡，rattling in front of a story把rattling放在story前面——very often rattling good常常是rattling good——means the story is lively and exciting意思是故事很生動精彩：it moves along內容緊湊，and you want to keep reading讓人想一直讀下去。A rattling good yarn說a rattling good yarn is an old, friendly way to say a really enjoyable tale是老派、親切的說法，指一個很好看的故事。

The word feels informal and a little old-fashioned; a young speaker, especially outside Britain, would probably just say a great story.

The word feels informal and a little old-fashioned這個字給人的感覺是口語、有點老派；a young speaker年輕人，especially outside Britain尤其是英國以外的，would probably just say可能就只會說a great story（很棒的故事）。

Though actually, rattling here is doing the job of very: rattling good is very good, with extra energy. It almost always sits before the noun, and it has a warm, old-book flavour, not a technical one.

Though actually不過其實，rattling here is doing the job of very這裡的rattling其實是在當very用：rattling good rattling good is very good就是very good，with extra energy只是多了點力道。It almost always sits before the noun它幾乎都放在名詞前面，and it has a warm, old-book flavour, not a technical one給人的是溫暖、老書本的味道，不是專業術語的感覺。