The 'gold' pits isn't likely to be ferried back to Earth, though - scientists remain unsure of the chemical composition of the yelllow, shimmering dust that lines the pit walls every 'summer'.
可是那些在凹点的金线不太可能被带回地球，所以科学家还不能确定这在每个“夏天”都在凹点排成线而且发光的黄色灰尘的化学成分。
Believe it or not there are still some people out there that are ignoring social media. They may be unsure of how to participate or maybe they just don't have time to get involved.
完全无视社会媒体的存在：有人把它捧得老高，但是就是有那种不顾一屑，完全脱离社会媒体的群体，不要觉得奇怪，或许他们不知道怎么参与进来，又或许他们根本没时间。
Many people are unsure of the HIV status of their partners, and those who are faithful cannot be certain that their partner is maintaining the same commitment.
许多人并不清楚他们的伴侣是否携带艾滋病毒，而且那些忠贞不二的人们也不能确定他们的伴侣是否同样忠贞。
Yet fear seemed to be trailing him, and he couldn’t tell whether it was something rational, or too much coffee, that made his lips dry and his river-readings unsure.
然而恐惧似乎如影随形，而且库特兹搞不清究竟是某种理性因素，还是过多的咖啡，让自己的嘴唇变得干燥，对河流的判读也不再确定。
Yet fear seemed to be trailing him, and he couldn't tell whether it was something rational, or too much coffee, that made his lips dry and his river-readings unsure.
然而恐惧似乎如影随形，而且库特兹搞不清究竟是某种理性因素，还是过多的咖啡，让自己的嘴唇变得干燥，对河流的判读也不再确定。
The euro again lost value compared to the dollar as investors remain unsure if countries like Greece and Spain that are saddled with big debt will be able to cut spending and still grow.
投资者依然担忧，深陷债务危机的希腊和西班牙等国能否减少支出，继续增长，欧元兑美元汇率有所下跌。
A larger study would be needed to confirm the findings. The researchers are unsure why city life affects the regions of the brain that handle stress.
需要更广泛的研究已证实这个发现，研究人员还不能确定为何城市生活影响了处理压力的大脑区域。
A third trash can will be for old glass that can be recycled etc... If you are unsure about the rules, look it up on the Internet or ask a friend.
第三个垃圾桶是用来盛装用过的玻璃制品以便回收利用的，等等。如果你对这些规定不太肯定的时候，不妨上网查查或向朋友询问。
Part of installing a system is running wires and capping lines that can be difficult for someone unsure of what they are doing.
部分系统安装和运行电线封顶线可难有人搞不清楚自己在做什么。
If you are left unsure as to the answer of any of these questions, that is because the website has been designed to be glitzy, and at some point lost sight of its purpose.
当在回答这些问题时，如果你们有不确定处，那是因为该网站刻意设计的很俗丽，但结果却失去其目的。
Henry remains unsure as to when he will be fit to lead the Gunners again, after admitting that his exertions at the World Cup finals have had a clear knock-on effect for his form this season.
亨利不太清楚他什么时候才能复出和带领球队，他承认参加世界杯决赛对这个赛季的状态有很大影响。
The 24-year-old is unsure when his world-record transfer will be completed, however. United and Madrid agreed that the deal would be done by 30 June.
这位24岁的球员还不确定自己的转会何时能完成。曼联和马德里应该在月底前完成交易。
The 24-year-old is unsure when his world-record transfer will be completed, however. United and Madrid agreed that the deal would be done by 30 June.
这位24岁的球员还不确定自己的转会何时能完成。曼联和马德里应该在月底前完成交易。
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