滴水不漏

滴水不漏 [dī shuǐ bú lòu]

1. ■ make sure that not a single drop leaks out -- tell a story without missing a single circumstance; There must be no leakage of any kind and degree.; watertight; leakproof; flawless:

全面论证，滴水不漏 make a proof all-round and without any omission