The second use is to say particularly or for a certain reason.

第二个用法是表示特别地或出于某种原因。

The second use it to say " particularly" or " for a certain reason" .

第二种用它来表示“特别地”或“出于某种原因”。

So when you do something for a certain reason, you can emphasize it using especially.

所以当你出于某种原因做某事时，你可以用 especially 来强调它。

These elements have been isolated for a certain reason.

由于某种原因，这些元素已被隔离。