be now open now covert

明若暗───Bright as dark;若───if

When the Internet research company Macromill asked 500 20-year-olds whether they would describe Japan's future as "bright" or "dark," 82 percent chose dark.───当网络调查公司Macromill询问500名20岁的人他们会用“光明”还是“黑暗”来形容日本的未来时，82%的人选择黑暗。

Denser tissue, such as cancer, appears bright and white, whereas less dense tissue, such as fat, appears dark or gray.───癌症之类的更致密的组织会显示为光亮的和白色的，反之脂肪之类没那么致密的组织就显示成黑暗的或灰的。

dark water drained from it, I could make out the bright roses and gold leaf design.───它刚一浮出黑色的河水，我就辨认出鲜亮的玫瑰以及金色的花瓣图案。