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They observed the most common chemical reaction among a family of reactions on the DNA molecule that are linked to sunburn, and discovered that this key reaction happens with astounding speed -- in less than one picosecond, or one millionth of one million
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他们观察到发生被晒伤的DNA分子上发生系列反应中最普遍的化学反应，并且发现这种反应速度惊人—至少以每皮秒或者每秒百万分之一的速度。 |
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They observed the oscillations of the helium as it twisted back and forth on the end of a metal rod.
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他们让氦在金属杆两端前后扭动，观察它振盪的情形。 |
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They obtained a loan from the government.
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他们从政府那里得到一笔贷款。 |
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They occupy the house next door.
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他们住在隔壁. |
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They occur in string theory as fields, rather like the electromagnetic field, that can adjust their values dynamically.
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它们在弦论中以场的形式产生，就像是电磁场一类，可以动态地调整它们的数值。 |
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They occur mainly in the poppy family, the buttercup family, and the nightshade family of plants.
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这些含生物碱植物基本属于罂粟科，毛茛科和茄科植物。 |
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They occur perhaps once a century.
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大概一个世纪会发生一次。 |
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They occur when normal prion proteins become knotted and resistant to being broken down, and cause rapid brain degeneration that is ineitably fatal.
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当正常的朊病病毒多节化并具有了抗破坏能力的时候，这些疾病开始出现；接着导致不可避免的致命的迅速脑部恶化。 |
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They occurred at 18.75±0.75ka, 16.97±0.96ka, 14.65±0.67ka, 11.82±0.69ka, 9.45±0.26ka, 6.83±0.26ka, and 4.5±0.23ka BP, respectively, and their average recurrence interval is 2375±432a.
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它们分别发生在距今约1.875±0.075、1.697±0.096、1.465±0.067、1.182±0.069、0.945±0.026、0.683±0.026和0.450±0.023万年，平均重复间隔2375±432年。 |
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They of Persia and of Lud and of Phut were in thine army, thy men of war: they hanged the shield and helmet in thee; they set forth thy comeliness.
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结27:10波斯人、路德人、弗人、在你军营中作战士．他们在你中间悬挂盾牌和头盔、彰显你的尊荣。 |
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They of course could not dissect the brains of people to see if new neurons grew, but they could use MRI to have a peek.
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他们当然不可能将人们的大脑切开来观察是否有新的神经元生长，但他们可以使用核磁共振成像来进行窥测。 |
