Lighter colors, however, reflect back a sizable fraction of the radiation, helping to keep a building - and, more broadly, the city and Earth - cooler.
然而，较浅的颜色会折射走数量可观的辐射，使得建筑——更广义地说，就是城市和地球——凉爽一些。
2
Later, the number of registered liquidators rose to 600 000, although only a small fraction of these were exposed to high levels of radiation.
尔后，登记的清理者数量增至600,000，尽管其中只有一小部分人暴露于高剂量辐射。
3
The effect of the radiation condition on the gel fraction, crosslinking regulation, and the network molecular weight were studied.