I have no adequate preparation.

我没有充分的准备。

《新英汉大辞典》

Well, you must have adequate preparation.

那么你一定准备得很充分了？

youdao

We cannot undertake a new task without making adequate preparation.

只有经过充分准备，我们才会接手新任务。

youdao

" Orthopedist Han Doo Jin remarks: "The whole thing is a mess and the new system was implemented without adequate preparation.

CNN: From Our Correspondent: The Great Korean Medical Fiasco

Without adequate preparation, says Abdel-Mohsin al-Akkas, a member of the majlis al-shura, the country's embryonic parliament, elections would be a leap in the dark.

BBC: Crown Prince Abdullah has committed himself to reform

To the extent that some countries hold rapid liberalization or liberalization without adequate preparation responsible for their difficulties, this may result in a slower pace in global liberalization.

CNN: ASIANOW - Asiaweek