原因很简单：恒星、行星都是由同样一片巨大的尘埃、气体聚集而成的。
The reason for that is simple: both stars and planets coalesce out of the same vast pool of dust and gas.
它们把卵产在猪笼草内。蝌蚪在猪笼草内由雨水聚集而成的小水池中生活。
They lay their eggs on the inside of the pitchers, and tadpoles grow up swimming in the tiny pools of rainwater that collect in the bottom of these plants.
他的朋友开导他说：“天是由气聚集而成的，没有重量，不可能塌下来。”
His friends advised him, "The sky is an accumulation of gas, thus weightless, and so it is impossible collapse."
在学校，你可能学过像木头，玻璃以及水这样的物质是由原子聚集而成的，从而形成分子。
In school, you probably learned that materials like wood, glass, and water are made of atoms that stick together to make molecules.
人们常常忘记利用聚集而成的长尾可以赚到钱，然而，本身是长尾的一部份还能赚到钱非常困难。
It is often forgotten that money is to be made by leveraging the collective long tail, however, making money while being part of the long tail is very difficult.
我们已经显着地改善了人类健康，但现在看来人类的健康要在自己产生的碳排放量聚集而成的厚重毯子下受到煎烤。
We have dramatically improved human health — yet now seem poised to cook it under a thick blanket of our own carbon emissions.
即便在欧洲的一些多元文化聚集区，这样的想法也会与极端亦或是民族主义权利扯在一起从而成为忌讳。
In many multicultural quarters of Europe, the idea is linked to the extreme or nationalist right.
普林斯堡商业中心是由马德里市中心繁华地带一所古老的公交站改建而成，这里已成为新的城市交通和商业聚集地。
Born out of the rebirth of a historic transit station in a bustling area of downtown Madrid, the Principe Pio retail center is an exciting new convergence of urban transit and retail.
脂肪组织有大量的脂肪细胞聚集而成。
聚合物胶团一般由两亲性共聚物分子在水性介质中自聚集而成，是一种具有广阔前景的新型靶向给药系统。
Amphiphilic block copolymer could self-aggregate into micelles in an aqueous medium, which emerged as novel targeting drug delivery system with broad prospect.
它们由两种成分聚集而成：蛋白丝和无定形的弹性蛋白。
They consist of aggregates of two components: protein filaments and elastin, an amorphous protein.
并可发现最小的聚集体是由四个双酞菁钕分子聚集而成。
并可发现最小的聚集体是由四个双酞菁钕分子聚集而成。
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