Analysts say this is a step backwards for democracy in Niger which could set a bad example for leaders in the rest of the West African region.

VOA: standard.2009.11.14

But,the history of Royalism is not--it goes beyond that, and there was a strong Royalist movement, as I've already suggested, and it wasn't just people looking backwards.

但是君主主义者们克服了这点,发起了一场强有力的保皇主义运动,就如我之前表示的,这不仅仅是人们在追溯过去

耶鲁公开课 - 1871年后的法国课程节选

Reverse transcriptase is a naturally occurring protein, it has a biological function in HIV, but we can use it for a technical logical function here by going backwards on the biological path from messenger RNA to DNA.

反转录酶是在自然环境中存在的蛋白质,它在HIV中发挥着生物功能,但在这里它可以发挥一个技术功能,让它用信使RNA反转录出DNA

耶鲁公开课 - 生物医学工程探索课程节选