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1·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》

2·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。

3·All the preparatory work has been completed.

各项准备工作均已就绪。《新英汉大辞典》

4·We'll go on with the preparatory work.

我们将继续进行筹备工作。

5·Suppose the preparatory work should not be completed.

假设准备工作完成不了，那可怎么办？

6·Suppose the preparatory work should not be completed.

准备工作完成不了，那可怎么办？

7·The preparatory work has brought tangible benefits to Beijingers.

奥运会的筹备工作为北京人带来了切实的好处。

8·Lenin did a great deal of the preparatory work for this conference.

列宁为这次会议作了大量的准备工作。

9·A rigorous and comprehensive approach requires some preparatory work.

应用严格的、综合的方法需要作某些准备工作。

10·I have an idea: I don't believe the proper preparatory work is being done.

我的看法是，该做的准备工作并没有完成好。