变暗：指天空逐渐变得黑暗，光线逐渐减弱。
... grow into 长成为 grow dark 变黑 a growing reputation 不断上升的名望 ...
... get dark黑起来 grow dark黑起来 keep (sth) dark对…保守秘密 ...
It began to grow dark.
天色开始变暗。
No sooner did it grow dark than he realized it was too late to go back home.
两句的意思都是“天刚黑他就意识到已经太晚了，回不了家了。”
Because, the solitude can grow dark, the solitude can also foster a bright bright degree.
因为，孤独可滋长黑暗的淫威，孤独也可助长光明的亮度。
the small dark spot where a sprout will grow.
VOA : special.2009.03.10
Dark pools are expected to grow from 9% of the market now to 15% by 2010, according to Tabb Group.
Healthy Arabica plants grow 10-12 feet tall and have dark-green leaves, white flowers and red or purple beans.
But as the dark side of the Web continues to grow and evolve, they're considering a harsher strategy: wiping crime sites off the Web altogether.