All the recorded staple crops grown in western Africa were introduced from elsewhere, beginning, at some unknown date, with rice and yams.
西非所有从某个未知的日期开始记录的主要农作物都是从其他地方引进的，刚开始是种植水稻和山药。
Psychologist Nina Strohminger at the University of Pennsylvania, who was not involved in the study, says she wants the effect to be real but cannot rule out some unknown confounding variable.
没有参与这项研究的宾夕法尼亚大学心理学家尼娜·施特罗明格指出，她希望这种影响是真实的，但不能排除一些未知的混杂变量。
He was trying, for some unknown reason , to count the stars.
不知何故，他试图数星星。
Getting out of your comfortable home here to some unknown places is a good experience as well.
走出你舒适的家，去一些未知的地方也是一种很好的体验。
My wallet was gone. I could only have left it on the G9 bus, which was now speeding in the dark to some unknown station.
我的钱包不见了。我只能把钱包留在 G9 公交车上，如今，那辆公交车正在黑暗中飞速驶向某个未知的车站。
He experienced some unknown health issue.
他经历了一些未知的健康问题。
They kept an eye out for some unknown plants on their expedition.
他们在远征途中留意了一些不知名的植物。
Some of our choices will be controversial, some unknown, some obvious.
我们的一些选择会有争议，一些不为人知，一些十分明显。
One day man will be able to control some unknown factors of weather.
总有一天人类能够控制天气的某些未知因素。
It can also be used to pick up some unknown or undetected intrusion modes.
另外它还可以用来提取一些未知的或未被发现的入侵行为模式等。
The network is not ready for some unknown reason. Please try again shortly.
由于未知原因，网络尚未准备好。请稍后再试一次。
What if someone exploits some unknown limitations of the security mechanism to break through?
如果有人利用安全机制的某些未知的限制破解了它，那么会怎么样？
My legs seemed to meet no resistance, as if I was pushed forward by some unknown force.
我感到我的腿没有受到任何阻力，好像有一股未知的力量把我往前推。
Rather, he probably got wind of the idea of printing through some unknown and lost source.
应该说，他很可能从某些我们不知道的渠道听说了这个技术。
They had agreed to get married soon, but for some unknown reason she refused to name the day.
他们同意马上结婚，可由于某些不明原因，她不肯把婚期定下来。
Presumably, the normal protein is converted to the altered protein by some unknown mechanism.
大概是正常的蛋白质通过一些未知的机制转变成变异的蛋白质。
Usually they went Dutch, but today, for some unknown reason, he had insisted on paying the restaurant check.
通常他们都各自付帐。今天不知道什么原因，他却坚持付餐厅的帐单。
Some of our choices will be controversial, some unknown, some obvious. But we hope they are all thought-provoking.
我们的一些选择会有争议，一些不为人知，一些十分明显。然而我们希望他们全部都能发人深省。
It is speculated that selenium may have some unknown neural function, but as of yet, its mode of action is unknown.
据推测，硒元素有未知的神经功能，然而目前这种功能的作用模式还是未知的。
Nobody else can put into one pocket a rusty knife, a half-eaten apple, a three-feet rope, six cents and some unknown things.
没有什么人会像男孩儿一样把生锈的小刀，吃剩下的半个苹果，三英尺长的绳子，六分钱和一些不知名的东西都放在一个口袋里。
What's more, the fact that this system is adaptive means that based on keyword matching, it might just serve you some unknown gems.
此外，这个系统具有自适应性，可以根据关键词匹配推荐一些有价值的话题。
Feather is rich in keratin, which contains a variety of amino acids, trace elements, vitamins and some unknown growth factors.
羽毛中含有丰富的角蛋白，角蛋白中含有多种氨基酸、微量元素、维生素以及一些未知生长因子。
What's more, the fact that this system is adaptive means that based on keyword matching, it may just serve you up some unknown gems.
此外，这个系统具有自适应性，可以根据关键词匹配推荐一些有价值的话题。
The scientists believe that the Masai are protected by their high physical activity rather than by some unknown genetic factor.
科学家们相信，是运动而不是基因因素使马赛人很少得心血管疾病。
But scientists have done the math, and to see mixing to the degree they do, the ocean must be getting extra energy from some unknown source.
科学家们已经完成了数学运算，他们发现海洋要混合出现有的程度，一定有从不明来源得到的额外能量。
Conclusion HCC is the main cause for the development of APS, the other causes include cirrhosis, iatrogenic injury and some unknown factors.
结论APS的病因中，HCC是最主要的，其他原因还有肝硬化、医源性肝损伤以及不明原因者。
Huahua is usually very happy. However, when we were taking photos for her today, she cried for some unknown reason. But then she was OK again!
花花平时可高兴了，但是今天我们给她照相时她却突然哭了，不过很快就又好了！
Like most cancers, it is thought to begin in a single cell, with a mutation that is not present at birth but that occurs later for some unknown reason.
我们认为该病与大多数癌症一样，是起源于单个细胞突变，但这种突变并不是先天的，而是发生于后天，但原因不明确。
Experiment shows that the system model can detect known intrusion modes with very high detection rate, and also can detect some unknown intrusion modes.
实验表明，该系统对已知攻击模式具有很高的检测率，对未知攻击模式也具有一定的检测能力。
Experiment shows that the system model can detect known intrusion modes with very high detection rate, and also can detect some unknown intrusion modes.
实验表明，该系统对已知攻击模式具有很高的检测率，对未知攻击模式也具有一定的检测能力。
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