The emblem of Shanghai shows a white magnolia flower (the official city flower), a large junk and a propeller, all symbolizing the pioneering and enterprising spirit of the city.

上海市市标以市斑白玉兰，沙船和螺旋桨组成，它象征这个城市开端拓展进取的精力。

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If the magnitude of this noise is large enough it can turn an electronic circuit to junk.

如果噪音的强度够大就可以将电子回路变成一堆垃圾。

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Artificial Flavorings and Colors: Associated with various types of cancers, especially when consumed in large amounts in a diet of junk food.

人工调味品和人工色素：人工调味品和人工色素与许多种类的癌症的引发存在相关性，特别是当人们大量地摄入垃圾食品的时候。

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They have degenerated into junk DNA. Much of the large human genome is comprised of these types of junk DNA that are no longer active.

FORBES: The Myth ... of the Myth of Junk DNA

These transactions were very complex internally, but externally one can see quite simply that these select few constructed a money machine that took mortgages, a large percentage of which were junk, as input and put out mortgage backed securities that were rated AAA. Plus, these money machines insured the transactions as though the mortgages were top rated (a 2% default rate, as I recall).

FORBES: Hang it up, Wall Street. Dodd-Frank is here to stay

Twitter is a large haystack of nonsense and marketing junk with a few needles of news and wisdom.

FORBES: A Better Way To Filter Twitter's Spambots? Ask Google