preparatory work的用法和樣例：
例句
- There is much preparatory work for us to do.
我們有許多準備工作要做。 - Prepare perennial essential preparative work.
常年必要的計量準備工作。
preparatory work的相關資料：
臨近單詞
preparatory
preparatory school student
preparatory Chinese course
Preparatory Constitutional
preparatory course Chinese
preparatory Chinese students
preparatory training program
preparatory education abroad
preparatory college education
preparatory physics experiment
Preparatory Committee of Election
