In both cases what look at first sight to be damaging symptoms caused by an infection are actually adaptive (though unpleasant) responses to it.

在这两个例子中，感染引发的的症状看似具有破坏性，但其实是对感染的适应性反应(尽管令人不快)。

youdao

The story tells us two things about European business, both positive (though they may not seem so at first sight).

这个故事告诉我们关于欧洲商业的两点情况，都是正面的(尽管一开始看上去似不是这样)。

youdao

When I went to the shelter, I saw an orange tabby and it was love at first sight for both of us.

当我去的住房，我看到一道橙色的猫，它是一见钟情为我们两个人。

youdao

In both cases what look at first sight to be damaging symptoms caused by an infection are actually adaptive (though unpleasant) responses to it.

ECONOMIST: Fatigue: Killing time | The

Durban: To someone based in Europe, the demands, at first sight, seem both unconscionable and completely unrealistic.

BBC: Durban: Climate summit looks back and forward

Many of the problems in both South Korean politics and the economy appear deeper and more entrenched than at first sight.

BBC: No tears for outgoing President