同义词： couch grass quackgrass quack grass quick grass witch grass witchgrass Agropyron repens
以上来源于: WordNet
The biggest obstacle is the ranchers themselves, whose cattle compete with prairie dogs and bison for grass and space.
最大的障碍是牧场主自己，他们的牛与土拨鼠和野牛争夺草地和空间。
Our street consisted mainly of mobile homes with small yards, but grass was difficult to grow in that climate, especially with the many children and dogs romping through the neighborhood.
街道两边主要是带有小型庭园的移动房屋，不过由于气候的原因，尤其是许多顽童还有狗四处乱跑，所以青草很难生长。
We need a fence to keep the dogs off the grass.
我们需要个围篱，不让狗狗践踏草坪。
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