因为说好不哭泣.我将泪水埋在手心.(翻译成英文）

I put my tears on the palm of my hand ,for my promise that never cry!

直译:我把我的泪水放进我手的手掌心里,是为了我的承诺(决不哭泣)

意译为你的提问:
因为说好不哭泣,我将泪水埋在手心!

Because I promised I won't cry, I will bury the tears in my hand.