若说某个局面是black and white，那意思就黑白分明，很容易判别错与对。
　　例句：
　　I'm really sure about some things. I think free education for all is a black and white issue.
　　The question of nuclear power isn't black and white. Many people believe it is the only way to produce a large amount of clean energy - but many others think it has considerable dangers.
　　注意：
　　短语in black and white的意思是白纸黑字，常用来形容某事被写下来作记录。
　　例句：
　　I couldn't believe I had won the lottery, but when I checked my bank statement there it was in black and white: one million dollars!
　　常识补充：
　　Giant pandas are famous for their love of bamboo, and it forms over 90% of the animal's diet. Unfortunately, bamboo has very poor nutritional value, meaning pandas have to consume up to 20kg each day to survive.
　　众人皆知大熊猫喜爱竹子，熊猫的食物超过90%都是竹子。不过可惜的是，竹子的营养价值很低，所以为了生存，熊猫每天得吃20公斤左右的竹子才能确保营养平衡。

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