The fossils will also help scientists work out the mechanics of how early birds flew.
这些化石还将有助于科学家研究早期鸟类的飞行机制。
This seems obvious, but most people don’t realize exactly how early you need to get there.
这一点似乎是显而易见的，但大多数人并不是确切明白需要早到多久。
It is an open question how early this understanding emerges, and there is some intriguing experimental work exploring this.
关于这种理解是在何时出现的，此问题尚有待解决，有一些有趣的实验来探究这一问题。
Perhaps in a decade scientists may be able to help shipping companies who want to know how early in the year they can expect to send freighters through a seasonally ice-free Arctic.
或许十年内，科学家们也许有能力帮助那些年初想知道何时能派遣船只经过季节性无冰层覆盖北极的轮船公司。
We don't know how early people began to use money, but we know some things were used as money thousands of years ago.
我们不知道人们是什么时候开始使用货币，但我们知道在几千年前他们曾使用一些东西作为货币来交换东西。
International Diabetes: And you say we should be started early with those patients. How early is early?
《国际糖尿病》：在这些患者中我们是否应该尽早使用胰岛素，早到何种程度？
International Diabetes: And you say we should be started early with those patients. How early is early?
《国际糖尿病》：在这些患者中我们是否应该尽早使用胰岛素，早到何种程度？
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