The preparatory work for the conference had been undertaken at two meetings of experts.

在两次专家会谈中，人们已经着手了会议的筹备工作。

youdao

At least a year's preparatory work will be necessary before building can start.

在建造开始之前至少需要一年的准备工作。

《柯林斯英汉双解大词典》

A survey of entrepreneurs who started companies last year shows that while virtually all did substantial preparatory research and planning, only half used that work to produce a formal business plan.

一项对去年创办公司的企业家的调查显示，尽管几乎所有人都做了大量的准备研究和计划，但只有一半人利用这些工作制定了正式的商业计划。

youdao

The two blocks have begun preparatory work, but a decision on formal talks is not due until 1999.

ECONOMIST: The free-trade winds die away

Much preparatory work has been done since the idea was accepted at a pan-American summit in Miami in 1994.

ECONOMIST: The free-trade winds die away

Regarding post-war planning, much preparatory work has been done, but much more remains.

CENTERFORSECURITYPOLICY: Post-War Planning