grass的复数是grasses； grass n.草;青草;牧草;禾本科植物;草地;草坪;草场;牧场； v.(向警方)告密，告发； 第三人称单数 grasses； 复数 grasses； 现在分词...
keep off grass远离草地； 例如The policeman told the boys to keep off the grass. Don\'t walk across the lawn; keep off the grass. 不要通过草地，勿...
keep off the rain别下雨； keep off（使）不接近；挡住;（雨、雪等）没有下;（使）不接近于 Keep off the grass, please! 请勿践踏草坪！ Keep off the law...
