Such changes are all but invisible over the short time scale of modern observations, and, it is argued, they are usually obscured by innumerable gaps in the imperfect fossil record.

这些变化在现代观测短时间范围内几乎是看不见的，而且，有人认为，这些变化常常被不完善的化石记录中的无数空白所掩盖。

youdao

But then you begin. You write the first draft, you draw the first sketch, you shoot the initial footage and realize it's not the way you imagined it. It's imperfect.

当你开始写初稿，画第一幅草图，拍摄第一段影像的时候，现实并不是你想象的那样，现实是不完美的。

youdao

it will always be an imperfect measure of priorities for policymakers.

建议改为“这都不是对决策者优先关注顺序的完美衡量”；

youdao

On balance most commentators say the political agreement is a deeply imperfect set of rules, which it is hoped may eventually produce a better Zimbabwe.

VOA: standard.2009.09.15

It's imperfect, though the English is quite spot on, I call myself during this lecture a couple of times a major government because gov major didn't quite translate very perfectly.

尽管英语是正确的，但翻译成其他语言难免有出入，在这个讲座期间,我多次说自己是学政治专业的,因为学政治的人翻译不是很好。

哈佛公开课 - 计算机科学课程节选

We have a good system in taxes, but it's imperfect because it hasn't been thought out thoroughly in terms of risk management.

我们有很好的税收制度，但它并不完善,因为它并非完全从风险管理的角度,经过考量而得出的。

耶鲁公开课 - 金融市场课程节选

But it could escape through imperfect joints in well pipe closer to the surface.

FORBES: Energy

And every earthly reality is only a pale shadow of its archetype, the original pattern, of which it is simply an imperfect copy.

NPR: Karen Armstrong: Myths and the Modern World

Mr. Spielberg's direction is hugely energetic and almost invisible, a fine combination, though his film, like the people it portrays, is imperfect.

WSJ: 'Skyfall' Upgrades Bond to Triple-A | Film Review by Joe Morgenstern