The Food Guide Pyramid was a graphic which emphasizes that a healthy diet is built on a base of grains, vegetables and fruits, followed by ever-decreasing amounts of dairy.

食物指南金字塔是一个图表，强调健康饮食的基础是谷物、蔬菜和水果，然后是应不断减少的乳制品。

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But it will build on your current knowledge base and give you the background you need.

但是它会建立在你现有的基础知识上，并提供一些你需要了解的背景知识。

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The eight men and three women took refuge at the base after their small boats collided on Oct.10.

10月10日，八名男子和三名女子乘坐的小船相撞，此后他们在该基地避难。

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The shell dropped and exploded above Fort Sumter, a United States military base on an island in the harbor.

VOA: special.2009.08.13

vote on the base of what they believe ,and not on the basis of what the facts are.

是依据信任来投票,而不是根据事实而投票的。

斯坦福公开课 - 经济学课程节选

When it cuts it leaves sticky ends or un-base paired single stranded regions on each end of the part its cut and that's just a property of many restriction enzymes; not all, some cut blunt,just right down the middle.

它切割后会留下两个粘性末端,或者未配对的单链部分,这是许多限制性内切酶的特性,但不是全部,有些限制性内切酶是从中间钝切的

耶鲁公开课 - 生物医学工程探索课程节选

"On one occasion he got hold of me and threw me on the wooden bed, and the base caught me on the back, " she said.

BBC: Louise Leggatt

And the previous thinking was less focused on the GOP and the base and its anger at immigration reform.

NPR: Analysis: Candidates' Minority Outreach

While consumers globally can benefit from the emergence of the new China, there will be an impact on the global competitive environment and also on the employment base in a number of the high-technology industries.

FORBES: Characteristics Of The New China