The chemical then flowed through the stem cells up into the hair follicles -- where melanocytes are kept.

然后，这种化学物质会流过干细胞，流至头发的皮囊--生黑色素细胞就得以保留。

If the hydrogen flowing onto its surface piles up enough, the gravity can squeeze it so hard it fuses into helium.

如果流向它表面的氢气堆积得足够多，引力就能将其挤压得很硬，使其聚变为氦。

The winds flowed up over the top and then plunged downwind so fast they caused something called a hydraulic jump.

风从山顶向上吹过，然后顺风而下，速度如此之快，以至于造成了一种叫做水跃的现象。

Europe is worried about the flow of migrants. They have a controversial deal that has in fact been effective in stemming that flow up until now.

欧洲担心移民潮。欧洲同土耳其签署了一项备受争议的协议，目的是阻止移民潮，现在这一协议已经生效。

And what happens is blood flows up to the head and you've only got to look at astronauts puffy faces, red, puffy, swollen faces and skinny legs.

血液会流向头部，你只要看看宇航员又红又肿的脸和细腿就知道了。

But the actual record, 4.17m square km in 2007, was the product of an unusual combination of sunny days, cloudless skies and warm currents flowing up from mid-latitudes.

2007年的417万平方公里的最低记录是受到当时艳阳高照，万里无云的天空以及从中纬度上来的暖流这种异常组合的影响的产物。

Water from underground pipes flows all the way up into the tall, above-ground section of the hydrant, called the barrel, even when the hydrant’s not in use.

来自地下管道的水一直向上流入消防栓高大的地上部分， 称为桶，即使在消防栓不使用时也是如此。

So, you can imagine the huge amounts of magma, or lava, that've flowed up to form even just this one island, much less the whole chain of islands.

所以，你可以想象大量的岩浆或熔岩，甚至只是这一个岛屿，更不用说形成整个岛屿链了。

Over a geologic process lasting tens of millions of years that is still ongoing, magma flowed up through the plume toward the bottom of the Pacific Ocean which then cooled into rock and steadily built up into a volcano.

在持续数千万年的地质过程中，岩浆通过火山羽流向太平洋底部，然后冷却成岩石，并逐渐形成火山。

A successful strike would destroy the dam and free up the waters to flow back up to Egypt into Lake Nassar behind their Aswan High Dam, relieving the country of its hypothetical drought-like conditions during this desperate potential scenario.

一次成功的袭击将摧毁大坝，释放出的水流将回流到埃及阿斯旺大坝后面的纳赛尔湖，缓解埃及在这种绝望的潜在情况下可能出现的干旱状况。