Okay, we'll have to look for synonyms and it's an excellent idea to block off the section.

好的，我们要寻找同义词，锁定这一部分是个绝妙的主意。

The landslide blocked off the section of the river, which meant the salmon could not swim upstream to spawn (lay their eggs).

滑坡堵塞了河段，这意味着鲑鱼无法游到上游产卵。

We can look for synonyms as well and sort of block off a section that looks promising that might have the same answer.

我们也可以寻找同义词，并且锁定在某个看起来很有希望有相同的答案的部分。

So it's a really nice idea to block off sections, because remember you do not have to read all of this and you really should not be reading all of this.

所以锁定区域是一个很好的想法，因为请记住，你不必阅读所有这些内容，而且你真的不应该阅读所有这些内容。

So for example, if I see a number such as 30 times brighter, if I block off this section, I can reference it and I can go back to it when I start answering my questions.

例如，如果我看到一个数字，例如30倍亮，如果我锁定这一部分，我可以根据它回到原文，然后开始回答问题。