keep off (使)不接近; 挡住;勿踏,勿踩
如：keep off the grass　勿踏草坪
They lit a fire to keep off wild animals.　他们点燃篝火防止野兽靠近.

pick the flowers　摘花


希望能帮到你,请采纳,谢谢!如有不明白的,欢迎随时提问!
祝学习进步,天天开心!