The key to success is preparation.
成功的關鍵是準備。
Preparation for the party started early.
聚會的準備工作很早就開始了。
With all the lesson preparation I have to do I work 12 hours a day.
加上必須的備課在內，我每天工作12個小時。
Careful preparation for the exam is essential.
認真準備考試十分必要。
She stressed the importance of careful preparation.
她強調了認真準備的重要性。