to do something for someone in exchange for a favor or help later
किसी के लिए कुछ करना बाद में मदद या उपकार के बदले (kisi ke liye kuch karna bad me madad ya upkar ke badle)
"We agreed to scratch each other's backs in this business deal."
"हमने इस व्यापार सौदे में एक-दूसरे के स्क्रैच बैक करने पर सहमति दी।" (hamne is vyapar saude me ek-dusre ke scratch back karne par sahmati di)
to support opposing parties to gain advantage
to try as hard as you can
to succeed or progress in one's life or career
to strike repeatedly with force, such as intense sun or rain
to reduce differences or improve relations
Working together closely and equally.