become black

基本解释

Their skins become black if they are refrigerated, although the flesh is still fine to eat.
香蕉应该在凉快室温中保存，若经过冷藏，即使果肉还能吃，但它们的表皮已变黑。
When the sun is gone altogether behind the mountain, the clouds turn grey and the mountains become black.
当太阳完全消失在山后，云又变为灰色，山区变成阴暗。
Since white dwarves have no fuel left for fusion, they grow cooler and cooler over billions of years to become black dwarves too faint to detect.
随着白矮星变得没有剩余的燃料用于聚变，它们会在之后的几十亿年中越来越冷，而成为难以被探测到的黑矮星。

Marian Anderson's presence made it possible for other black singers to become opera singers in the United States.
They urged her to become a music teacher, because they said that was the only good job for a black woman at that time.
It grew to become one of the most successful black-owned businesses in the United States.

Large urban school systems have now predominantly become black and Latino majority.
NPR: Big Urban Schools Grapple with Multiple Problems