Méi / yǒu / chōng / fèn / zhǔn / bèi / jiù / tiǎo / zhàn / lǎo / bǎn / de / jué / dìng / wú / yì / yú / tài / suì / tóu / shàng / dòng / tǔ

没有充分准备就挑战老板的决定，无异于太岁头上动土。

Challenging the boss's decision without adequate preparation is like courting disaster.