国家天文台研究员、博士生导师。
一张照片、一本诗集和一枚金戒指—这就是他的全部家当。
A photo, a book of poems and a gold ring—this was the sum total of his possessions.
你不必天天自寻麻烦去辨别真伪，但是，如果你有理由认为一枚硬币或一张钞票是假的，也许这些小小的提示将会帮助你。
You don't need to look for trouble ail the time, but if you have reason to think a coin or bill is a counterfeit, perhaps some of these tips will help you out.
张朝晖在3个月的时间里用了10万枚钉子将作品《钉子户》制作而成，《钉子户》由一幅男性图形和一幅女性图形组成。
He spent three months finishing his work by 100, 000 nails and the work is composed of a male image and a female one.
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