hand in hand
1．each holding the other's hand手拉手地
They strolled hand in hand in the street．他们携手漫步街头。
2．happening or working together；joinly与…合作；与…携手共进
I gnorance and poverty often go hand in hand．愚昧与贫困常常联系在一起。
Theory should go hand in hand with practice．理论应当与实践相结合。
Doctors and nurses work hand in hand to save lives．医生和护士密切合作挽救生命。
A good teacher knows how to work hand in hand with students．一位好教师知道如何与学生合作。
The technical revolution should go hand in hand with the educational revolution．技术革命应该和教育革命携手共进。