three can both cool

my parents both can还是can both friends can be cool这句是什么意思 1.Trees can cool the air. The three students are both 15 years old 改错 英语翻译My grandfather and grandmother are both sixty-three.They They are both in Class Three,the _____class Helen can speak three languages. you can not burn at both ends you can't have it both ways. I can’t make both ends meet. hardly can you get them both it is about cool as cool can be ? 这个句子怎么翻译啊