There are many places on the earth that are still unknown to humans.
地球上还有许多人类未知的地方。
Whether this striking absence of pluripotency is universal is still unknown.
多能性的这种明显缺失是否是普遍的尚未可知。
However, the overall effectiveness of animal models for mood disorders is still unknown.
然而，心境障碍动物模型整体有效性仍然未知。
How this ability has been evolved is still unknown to the scientists as well as its function.
这种能力是如何进化而来的，以及它的功能对于科学来说仍然是未知的。
The precise brain mechanisms leading to the perception of the illusion are still unknown, however.
然而，导致这个错觉发生的确切的大脑机制还尚不明了。
Satisfaction and commitment seem to be related , but whether one causes the other is still unknown.
满意度和承诺似乎是相关的，但是否有其他原因仍然不明。
Because the rv repair time is still unknown, Marian is nervous about making our final destination on time.
因为RV的修理时间仍旧是未知的，所以Marian对准时到达最终的目的地感到不安。
Gradually, the crowd thinned and, after four hours, the meeting broke up, with Mr. Lewis's fate still unknown.
渐渐地，人群变的稀薄了，经过4个小时，会议结束了，而刘易斯的命运仍是未知数。
Research has linked narcissism to genetics, but it's still unknown which genes actually contribute to this.
已经有研究认为自恋与基因有关，但仍无法得知哪种基因更易导致自恋。
During the PETM, for reasons that are still unknown, the amount of carbon in Earth's atmosphere rose rapidly.
由于种种原因，在古新世-始新世极热时期地球大气中碳上升的量。
Exactly how chromosomes take their necessary shapes, and how these shapes then affect genes, is still unknown.
染色体究竟是如何形成特定的形状，然后又如何影响基因，这还不得而知。
There's evidence that they play important roles, but the molecular underpinning of that is really still unknown.
有证据表明它们发挥可重要的作用，但是分子学基础仍未明确。
The disease begins, they believe, when for still unknown genetic and other reasons, the brain starts to churn out amyloid.
他们相信，疾病发生的初期，虽仍有未知的基因及其他原因在作祟，但脑部已经有大量的类乙型蛋白产生。
Though the conclusions confirm primates' avoidance of red, what drives our hesitation around the color is still unknown.
尽管结论证实了灵长类对红色有规避行为，但是驱使我们对红色作出反应内在机制仍然不明。
Still unknown, she says, is whether one or more of the top performing bacteria (such as Lactobacillus curvatus / gramininis VM25;
她说，目前还不知道，到底是最有抑制性的一种或几种细菌（例如乳酸菌/gramininisVM25；
The findings may resolve some uncertainty about the nature of the virus, but much is still unknown about its origins and effects.
这些发现可能部分解决关于该病毒自然特性悬而未决的问题。但是关于病毒的起源和效应仍然不明确。
If your site is rather new and still unknown, a good way marketing technique is to get involved in the community around your topic.
如果你的网站是全新的且不为人知，参与与你网站主题相关的社区是一个很好的推广方法。
Human babies sometimes fall victim to a similar phenomenon named sudden infant death syndrome, the cause of which is still unknown.
人类婴儿有时也会患上类似的病症，这被称为“婴儿猝死综合症”，其产生原因尚不明确。
Because so much is still unknown at this point, the main risk factor is people traveling to areas where cases have already been identified.
鉴于此时很多都还是未知数，那些到过这些已被确认受感染地区的人们就成为主要风险因素。
The pancreas is the organ that helps the body regulate blood sugar. So it’s a vicious cycle,Robertson said, and the cause is still unknown.
胰腺是帮助身体调整血糖水平的器官，因此，罗伯逊说，这是一个恶性循环，但糖尿病的病因我们仍不清楚。
The pancreas is the organ that helps the body regulate blood sugar. So it's a vicious cycle, Robertson said, and the cause is still unknown.
胰腺是帮助身体调整血糖水平的器官，因此，罗伯逊说，这是一个恶性循环，但糖尿病的病因我们仍不清楚。
What is still unknown, he says, is how full production will affect the deposits, and what mixture of gases and water must be injected to maintain their output.
他表示全面投产究竟对矿物沉积层会造成怎样的影响和必须注入什么样的水和天然气混合物才能维持生产还都是未知数。
The Neanderthal, a cousin of the modern human who disappeared about 30 millennia ago for still unknown reasons, was far more massive and had a larger brain.
穴居人，这个约在三万年前不知何因消失的现代人近亲，要远比现代人巨大，他们有着更大的大脑。
The Neanderthal, a cousin of the modern human who disappeared about 30 millennia ago for still unknown reasons, was far more massive and had a larger brain.
穴居人，这个约在三万年前不知何因消失的现代人近亲，要远比现代人巨大，他们有着更大的大脑。
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