Tools such as Selenium and Watir are open source; what's more, they have been built with developers in mind.

工具如Selenium和Watir都是开放源码的；另外，它们构建时考虑到了开发人员。

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Tools such as Selenium and Watir are open source; what's more, they have been built with developers in mind.

工具如Selenium和Watir都是开放源码的；另外，它们构建时考虑到了开发人员。

youdao