Many members of the mustard family, spurge family, legume family, and grass family are top hyperaccumulators.

芥科植物、大戟科植物、豆科植物和禾本科植物中的许多植物都是顶级的超富集植物。

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Our family often go picnic in the nearby park where we can spread a carpet out on the grass and enjoy ourselves.

我们家经常去附近的公园野餐，在那里，我们把地毯铺在草地上然后开心地玩耍着。

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Finding green space is not always easy, and you may have to work a bit to get your family a little grass and trees.

寻找绿色的空间并不总是那么容易，你可能需要做些工作来为家里种出草坪和树木。

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Sammy devoured so much grass and shrubbery at the family's home in Turlock, Calif.

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Instead of standing in a gray paved parking lot grilling hot dogs and hamburgers on a stove, how about going to a park with green grass and having a good old-fashioned picnic with the family?

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The majority of beef cattle in the U.S. are raised on grass on family-owned ranches before they are sent to feedlots for fattening and then on to the slaughterhouse for processing.

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