preparatory to
1. 在……之前
You should pack it up preparatory to sending it by post.
在邮寄之前你应该把它包好。
2. 作为……的准备
习惯用语preparatory to1.作为...的准备, 在...之前He made his will preparatory to his voyage.他在出航前立下了遗嘱
preparatory to
1. 在……之前
You should pack it up preparatory to sending it by post.
在邮寄之前你应该把它包好。
2. 作为……的准备