preparation可數嗎?

　　例句：

　　She stressed the importance of careful preparation.

　　她強調了認真準備的重要性。

　　He was fastidious in his preparation for the big day.

　　他認真仔細地準備著這個盛大的'日子。

　　The importance of preparation cannot be overemphasized.

　　準備的重要性要一講再講。