A closer look of the Eagle Nebula, however, shows the bright region is actually a window into the center of a larger dark shell of dust.

然而，靠近一点看，其中那块明亮的区域，就是一个看向“由尘埃组成的黑暗云层中心”的窗口。

youdao

According to the two researchers, the dying star's matter creates an ultra-thin, ultra-cold, ultra-dark shell of material that is virtually indestructible.

根据这两位元研究员的说法，那些坍缩的核心会创造一个坚不可摧的超薄、超低温、超黑暗的物质框架。

youdao

Each white, milk or dark chocolate shell has a slot in the front for wafers, nougat, biscuit or caramel, and a depression in the top to hold nuts, fruit or liquid.

每一块白巧克力、牛奶巧克力或黑巧克力外壳的前端都有一个凹槽，可以把威化饼、果仁糖、小饼干或者焦糖块塞进去。外壳顶部也有个凹洞，用来摆放坚果仁、水果或者果酱。

youdao

During my tour through the dark and damp shell of former grandeur, the vastness of Gibbs' creation became even more evident.

CNN: Sending out an SOS for 'America's flagship'

The colors provide a stark contrast to the dark burned-out shell of a house that sits in the distance -- and offer a painful reminder of the tragedy that befell the people who lived within.

CNN: Kentucky house fire kills 2 adults, 5 children

She and her husband determined that by candling the egg, shining a flashlight through the shell in the dark.

WSJ: Big Chocolate Eggs May Be Big, but Big Hen's Eggs Not So Much