编辑正在校对这篇文章的最终版本。

The editor is ___proofing the final version of the article.

面包师正在让面团发酵，这样烤出来的面包会更松软。

The baker is ___proofing the dough to make the bread lighter and fluffier.

他们在工厂里测试这种新材料的防水性能。

They are ___testing the new material for water resistance at the factory.