1·In Earth's earliest atmosphere, methane and carbon dioxide occurred at much higher levels than at present-a circumstance that was favorable for early life.
在地球最早的大气层中，甲烷和二氧化碳的含量比现在要高得多，这对早期生命来说是有利的。
2·All these nouns refer to a favorable or advantageous circumstance or combination of circumstances.
所有这些名词都指一种有利的环境或多种因素。
3·People can be shaped in adversity and adversed circumstance is favorable for people's growing up, they are two contrasting concepts.
在逆境中，人可以成长，和逆境有利于人的成长，是两个截然不同的概念。
4·Last year, although China's national economy made a favorable turn, it was still not stable enough. Under such circumstance, the pro-active fiscal policy should not be slackened.
去年中国国民经济出现的重要转机还不是非常稳固，在这种情况下，积极的财政政策不能轻言“ 撤火”。