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1·At a time when natural history was a valuable tool for discovery, Merian discovered facts about plants and insects that were not previously known.

在那时，自然史是很有价值的探索工具，梅里安发现了有关植物和昆虫的真相，这些真相从未为人所知。

2·It was a valuable tool.

这真是一件宝贵的工具。

3·It's a valuable tool that you want to have as a programmer.

对于作为一名程序员的你来讲，这是很有价值的一个工具。

4·Think of the Internet as a valuable tool for gathering leads.

想想作为一个有价值的工具收集线索互联网。

5·E? Mail is a valuable tool for college students at any level.

电子信件对各种水平的大学生都是一种有用的工具。

6·It will be a highly valuable tool for a small subset of potential users.

对于一小部分潜在用户，它是一个价值极高的工具。

7·It became a valuable tool for them, and our AD base has grown every year.

这变成了他们的很有价值的工具，到现在我们的广告每年都还在扩大。

8·ClearQuest is a valuable tool that helps you manage this complicated landscape.

ClearQuest是一个十分有价值的工具，能够帮助您管理这个复杂的情况。

9·However, when used correctly, fencing is a valuable tool of good veld management.

然而，当正确使用，击剑是一项宝贵的工具，良好的草原管理。

10·However, some scientists believe that carbon credits can still be a valuable tool.

尽管如此，一些科学家认为碳信贷可能仍然是有价值的方法。