1·Nevertheless, astronomers still believed that when a comet approached the Sun—where they could study it—the Sun's intense heat would remove the corrupted surface layer, exposing the interior.
尽管如此，天文学家们仍然相信，当一颗彗星接近太阳时——这是他们可以研究它的地方——太阳的高温将会移除损坏的表层，露出内部。
2·They are transient tangles in the sun’s magnetic field that are slightly cooler than their surroundings and so appear as dark patches in the photosphere—the surface layer of the sun.
它们是位于太阳磁场上暂时性的比周边温度偏低的混乱的一块区域，也因此看起来就像光球——太阳表层上的暗斑。
3·They are transient tangles in the sun's magnetic field that are slightly cooler than their surroundings and so appear as dark patches in the photosphere—the surface layer of the sun.
它们是位于太阳磁场上暂时性的比周边温度偏低的混乱的一块区域，也因此看起来就像光球——太阳表层上的暗斑。
4·PRK removes the thin surface layer of your cornea (epithelium). Your eye surgeon then USES a laser to flatten your cornea or make its curve steeper.
PRK是移除角膜薄的表层(上皮细胞)，然后眼科医生用激光使角膜平坦或弯曲。
5·Hair furcation because the surface layer (or periostracum) of hair stem has been already damaged.
头发分叉是因为毛干的表层(或角质层)已经损坏。