Then scientists can search for ways to alter them.
接下来科学家们可以研究出方法去改变它们。
These proteins then scientists extract of a laboratory test.
随后科学家对这些蛋白质提取物进行了实验室试验。
Then scientists at Bell Labs produced a version that ran on hydrogen peroxide and provided a few seconds of lift.
随后贝尔实验室的科学家们制造出的一个版本采用过氧化氢，并能提供数秒的空中时间。
For instance, now and then scientists are hampered by believing one of the over-simplified models of science that have been proposed by philosophers from Francis Bacon to Thomas Kuhn and Karl Popper.
比如，科学家会不时因相信从培根到库恩、玻普这些哲学家所提出的过分简化的科学模型而受到桎梏。
Then in the late 1500s, food scientists in the Netherlands cultivated large, straight, sweet, red carrots like the ones we eat today.
然后在16世纪晚期，荷兰的食品科学家培育出了像我们今天吃的那种又大又直又甜的红胡萝卜。
Then, in the late 1500s, food scientists in the Netherlands cultivated large, straight, sweet, red carrots like the ones we eat today.
随后，在16世纪后期，荷兰的食物科学家培育出了又大又直又甜的红色胡萝卜，与我们今天吃的胡萝卜类似。
Long-ago builders could have attached wooden poles to the stones and rolled then across the sand, the scientists say.
科学家们说，很久以前的建筑工人也许是在石头上绑上木杆，然后在沙子上滚动。
Some scientists theorized that perhaps when the ground is slippery the high winds can then move the rocks.
一些科学家提出了一个理论：当地面很滑的时候，或许大风就可以移动岩石。
Scientists would then be able to see if it's similar to any human language, or a mix of the language.
科学家们将能够发现它是否与任何人类语言相似，或者是这种语言的混合。
Scientists believe that we just need to turn on a printer in the kitchen and then we can enjoy our favourite food whenever we like.
科学家们认为，我们只要在厨房里打开一台打印机，就可以随时享用我们最喜欢的食物。
Scientists say that humans may first "talk" with mammals and then other vertebrates such as fish.
科学家说，人类可能会先与哺乳动物“交谈”，然后是其他脊椎动物，比如鱼。
But since then, scientists have been stumped about how they got there.
但是自从那时以来，科学家们一直无法解释它的成因。
Since then, scientists have found clues to explain these animal transitions in the fossil and molecular records, as well as in energetic analyses, but the full story is yet to be discovered.
自那时起，科学家陆续找到了化石和分子水平的证据，以及通过能量分析来解释这一进化过程，但是尚未达到完全理解的程度。
The scientists then gave their subjects access to the guesses of the other members of the group.
然后，科学家们告诉研究对象组里其他人的估计数字。
The scientists then used brain imaging techniques to find that dopamine peaks along with emotional arousal.
这时，科学家们用大脑成像技术发现，多巴酚伴随着情感的激发大量出现。
The scientists then traced the leptin decline to a pathway that originates in the brain's hypothalamus.
随后，科学家跟踪瘦素下降原因，找到通路的源头——大脑下丘脑部。
Then the scientists made the glass beads hydrophobic.
然后，科学家们把玻璃珠变成疏水性的。
Since then the scientists in Newcastle have been studying what happens when carrots are chopped and cooked.
于是纽卡斯尔大学的科学家们便开始研究胡萝卜在被切碎和煮食的过程中会发生什么变化。
Then the scientists asked if the insects could distinguish facelike features from non-faces?
之后科学家们想知道它们能否将脸部特征与非脸部特征区别出来。
The scientists then switched them to a calorie-controlled, low-fat diet.
然后，科学家们开始改变它们的饮食，限制其能量的摄入，低脂饮食。
Why, then, do scientists cheat?
为什么？科学家们为什么要造假呢？
Since then, scientists have identified a dozen more Toll-like receptors in mice and humans.
科学家已经搞清楚了这些分子的结构，时至今日，已经在小鼠和人身上发现了十几种Toll样受体。
The scientists then transplanted the cells into mice, where they produced brown fat tissue.
科学家们接着将这些细胞转移到老鼠生产的棕色脂肪组织中。
The scientists then transplanted the cells into mice, where they produced brown fat tissue.
科学家们接着将这些细胞转移到老鼠生产的棕色脂肪组织中。
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