dot the i's and cross the t'sinformalDETAIL to pay careful attention to all the details when you are finishing something 〔即将完成某事情时〕检查所有细节，一丝不苟地完成dot the i’s and cross the t’s• Well, we haven't dotted the i's and crossed the t's, but the contract's nearly ready.
→ dot the i’s and cross the t’s at dot2(1)