You try to anticipate everything in advance, but in the course of testing, you always learn something new and have to change the plan to incorporate new or changed (or deleted) tests.

您试图提前预料每一件事，但是在测试期间，您总是了解到一些新的内容，并且不得不改变计划，结合新的或变更的（或删除的）测试。

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And then, suddenly, you see these people who are really fighting something, who are really surviving, who have so much pain and loss. It just changed everything.

然后，忽然间，你看到真正在抗争的这些人，他们真正是死里逃生，他们饱经痛苦和损失。那恰恰改变了一切。

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Then in 1851 something happened which changed everything.

1851年发生了一些事改变了一切。

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Then in 1851 something happened which changed everything.

1851年发生了一些事改变了一切。

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