" Perhaps it is what the books call 'a passing fancy'" ?

“也许这就是书上所说的‘一时兴起’”？

'A mere fancy passing through my head assumes a factitious importance to you, because it has been made permanent by being written down.

“我脑子里闪过的一个单纯的幻想对你来说具有人为的重要性，因为它已经通过写下来而永久化了。

Men are given to the trick of having a passing fancy for somebody else in the midst of a permanent love, which reasserts itself afterwards just as before.

男人在永久的爱中间，会有轻率之举，暂时迷恋上另一个女人。但那永久的爱随后又会如先前一样，重新获得它的地位。

He slept very quietly, without a movement, so that he might have been dead, and he was like some wild creature of the woods, resting after a long chase; and she wondered what fancies passed through his dreams.

他非常宁静地睡在那里，一动也不动，几乎和死人一样，他象是森林里的一头野兽，在一阵猛烈追猎后躺在那里休息；她在好奇地猜测，他正在经历什么奇异的梦境呢？

Mr. Starr was out of town, and would I talk to anyone else? I would not. I didn't even want to talk to Starr very badly, It was just a passing fancy. He was too far away to hit me.

斯塔尔先生不在城里，我能和其他人谈谈吗？我不会。我什至不想和斯塔尔说得很糟糕，那只是一时的幻想。他离得太远打不到我。