This system includes 46 indexes in 4 layers: goal layer, criterion layer, field layer, and index layer.

该指标体系设立目标层、准则层、领域层和指标层4个层次的指标，共有46个指标。

youdao

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。

youdao

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。

youdao

We can all agree that Vick will be safer on the field with this added layer of protection.

FORBES: Vick Gets Military-Grade Jacket Guaranteed to Prevent Injury

Since Oslo, since Zo Artzeinu, we developed a concept of what the right should do put a different agenda on the Israeli field and create a new layer of leadership that, instead of coming from the leftist avant-garde, comes from the right avant-garde.

NEWYORKER: The Party Faithful

The field had to contend with a thick layer of fog which delayed play for over three hours and 75 players have yet to complete the second round.

BBC: SPORT | Golf | Lehman continues impressive form