当然，他们是西半球的第一批人吗？
Of course, were they the first people in the Western hemisphere?
每个半球又进一步分化为四个区域或叶。
It is further divided into four regions, or lobes, in each hemisphere.
这使得地球变暖了，尤其是北半球地区。
Which makes earth, and in particular, the northern hemisphere, warmer.
在南半球，冬天已经开始，赤道以北是夏天。
In the Southern hemisphere winter has begun, and it is summer north of the equator.
大脑半球轮流进入以慢脑波为特征的睡眠阶段。
The brain hemispheres take turns sinking into the sleep stage characterized by slow brain waves.
枫树等树木越往北半球的北边走，通常就越红。
Trees such as maples usually get much redder the more north you travel in the northern hemisphere.
随着北半球秋季的临近，太阳能的可用量大幅下降。
As fall approaches in the northern hemisphere, the amount of solar energy available declines considerably.
尽管北半球的燃料消耗更大，但那里的气温似乎正在下降。
Although the fuel consumption is greater in the northern hemisphere, temperatures there seem to be falling.
大部分燃料是在北半球燃烧的，那里的温度似乎正在下降。
Most of the fuel is burnt in the northern hemisphere, where temperatures seem to be falling.
大部分燃料是在北半球燃烧的，那里的温度似乎正在下降。
Most of the fuel is burnt in the northern hemisphere, where temperatures seem to be falling.
通过从探测器的舱室中提取水分，探测器表面形成一个凹半球。
By extracting water from the detector's chamber, the detector's surface becomes a concave hemisphere.
海豚，还有其他一些海洋动物，它们睡眠时会关闭大脑的一个半球。
Dolphins, as well as other marine animals, shut down one hemisphere of the brain when they go to sleep.
你们中惯用右手的人，也就是十分之九的人，语言功能位于左半球。
Those of you who are right-handed, which comprises about nine out of ten people, have language in your left hemisphere.
虽然南半球也见证着类似的融冰影响，但是格陵兰冰盖可能特别脆弱。
While similar melting effects are being measured in the southern hemisphere, the Greenland sheet may be uniquely vulnerable.
因为地球上大部分的冰川都在北半球，如果温度过高，冰川就会停止形成。
Because most of the planet's glaciers are in the northern hemisphere, and if it gets too warm, then glaciers will stop forming.
预测信号是大脑右半球发出的稳定节奏阿尔法波，与放松身心的活动密切相关。
The predictive signal is a steady rhythm of alpha waves emanating from the brain's right hemisphere, which are closely associated with relaxing activities.
它们受到气候变化事件的影响，例如天气系统能影响整个半球和各大洲都有影响。
They are subject to climatic occurrences such as weather systems, which impact upon hemispheres as a whole, and from continent to continent.
自从欧洲人在西半球发现了一个“新世界”，个人机会的梦想就一直存在于美国。
The dream of individual opportunity has been home in American since Europeans discovered a "new world" in the Western Hemisphere.
如果大脑有足够冗余，即使你的右半球被破坏了，你的左半球仍然有相同的记忆。
If there's enough redundancy in the brain so that even if your right hemisphere got destroyed, your left hemisphere still has all the same memories.
我们很快就会知道，600年前北半球大部分地区每年夏季和冬季的温度是如何变化的。
We are close to a knowledge of annual summer and winter temperature variations over much of the northern hemisphere going back 600 years.
因为语言中心更小，而且只位于一个半球，这就使男性更容易出现语言障碍，如诵读困难。
Because language centers are smaller, and only located in one hemisphere, this puts males more at risk for language disorders like dyslexia.
与向志愿者的左耳播放噪音相比，向他们的右耳播放噪音（刺激大脑左半球）更有可能唤醒他们。
Playing sounds into the right ears (stimulating the left hemisphere) of volunteers was more likely to wake them up than if the noises were played into their left ear.
随着地球围绕太阳的轨道和轴的倾斜将我们带到这个半球，我们更远离直接接收太阳光线的地方。
Earth's orbit around the sun and tilt on its axis combine to carry us in this hemisphere further away from receiving the sun's rays most directly.
但莱勒认为，这并不是幽灵。相反，大脑右半球正在将过去的影响联结起来，从而创造出全新的事物。
But it's no ghost, according to Lehrer. Instead, the right hemisphere of the brain is assembling connections between past influences and making something entirely new.
当地球一个半球距太阳的倾斜度更大时，从那个位置看到的太阳每日运行轨迹的弧线就会向地平线下降。
As one hemisphere of Earth tilts farther from the sun, the arc of the sun's daily path seen from that location lowers toward the horizon.
研究结果为一种长期存在的假设提供了最好的证据，即单半球睡眠是在生物寻找敌人的过程中进化而来的。
The results provide the best evidence for a long standing supposition that single hemisphere sleep evolved as creatures scanned for enemies.
冬季六边形包括一些可见的最亮的恒星，它们在地球北半球的冬季天空中形成了一个大而容易辨认的图案。
The Winter Hexagon involves some of the brightest stars visible, forming a large and easily found pattern in the winter sky of Earth's northern hemisphere.
莱勒写道：“当我们的大脑处于放松状态时，我们更有可能将关注的焦点转向大脑右半球释放出的远程连接流。”
"When our minds are at ease, we're more likely to direct the spotlight of attention towards that stream of remote associations emanating from the right hemisphere," Lehrer writes.
当异常半球中的神经元在成熟之前经历过多的细胞分裂时，就会发生这种罕见的疾病，即大脑一侧长得比另一侧大得多。
The rare disorder, in which one side of the brain grows substantially larger than the other, occurs when neurons in the abnormal hemisphere undergo too many cell divisions before they mature.
婴儿大脑的神经元失衡导致癫痫发作，促使外科医生切除了扩大的大脑半球——这种治疗在类似病例中被证明是成功的。
The neuronal imbalance in the brain of the infant caused seizures, prompting surgeons to remove the enlarged hemisphere—a treatment that has proven successful in similar cases.
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