其它食品比如大米，烤土豆以及吐司面包不被认为是垃圾食品，尽管他们含有的营养更加有限。
Other foods such as rice, roast potatoes and bread are not considered junk food despite having limited nutritional content.
21位志愿者的血液样本被用来检测来自各种农作物(比如大米，土豆，和卷心菜)的MicroRNA的存在。
Blood samples from 21 volunteers were tested for the presence of microRNAs from crop plants, such as rice, wheat, potatoes and cabbage.
中国长期以来一直有信心在粮食方面自给自足，比如大米，小麦，玉米以及大豆，虽然去年进口了9.5亿吨，相当于国产的17%。最近有人担心说中国粮食进口量加大会引起粮价上涨。
China has a long-standing ambition to be self-sufficient in grain - rice, wheat, maize (corn) and soya beans - yet it imported some 95 million tonnes last year, about 17% of its domestic production.
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