帮忙英语翻译短文悬赏200

Animals are useful to us. For example, dogs can watch the door, or even save us in emergency; cats can catch mice and keep our rooms clean; frogs can kill worms and protect our vegetable and rice; birds can catch insects and protect trees. We must protect our environment and the animals of the world.

Animal us useful. Listed as : the dog gates, even with the critical moment can save us; Cat and mouse can protect the premises clean; frog catch insect protection vegetables and rice; birds can catch insects protected trees we must protect our environment

上面两位翻译的都不错,不过不够到位,翻译最主要是到位，不用每个词都要匹配上吧。我来个perfect的：Animals are useful to us. For example, dogs can guard the house, or even save our lives from risks. Cats can catch mice to keep our rooms clean; frogs can kill insects and protect our vegetables and rice; birds can catch insects and protect trees. We have to protect our environment and the animals of the world.

Animals are helpful to us.For example,dogs can watch the