Cereals, rich in carbohydrates, provide the staple of many human diets.

谷物富含碳水化合物，是许多人饮食中的主食。

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Back in the 1960s, plastic was well on its way to becoming a staple of American life.

早在20世纪60年代，塑料就已经逐渐成为美国人生活的主要物品。

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In Nigeria, where tomatoes are a staple of local diets, the insect's effects are devastating.

在尼日利亚，西红柿是当地人的主食，这种昆虫的影响是毁灭性的。

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Rice is a staple food in Cuba and the country consumes more than 700,000 tons of rice a year.

VOA: standard.2010.07.29

That was good for about 10 seconds before it snapped out of that cheap little staple they put it in there with.

它可以坚持用10分钟,之后就会从那个廉价订书钉里掉出来。

哈佛公开课 - 幸福课课程节选

and then I worked for the House of Blues, which is another staple in Hollywood

接着我给“蓝调之家”干，也是好莱坞的一家重要的大公司，

我在好莱坞工作 - SpeakingMax英语口语达人

"Rice was a staple of many of their home foods, " Groff said of the students.

CNN: New York school goes all-vegetarian

Hollywood picked up on the trend and made the red carpet a staple of movie premieres.

WSJ: It's Time Again in Hollywood to Roll Out the Reddish Carpet

Legal disputes over the custody of frozen embryos became a staple of divorce proceedings.

WSJ: Robert Edwards, Pioneer of In Vitro Fertilization