复数： disadvantages

America starts with one big disadvantage .

美国一开始就处于不利地位。

Why would humans evolve a response that puts us at a social disadvantage ?

为什么人类会演化出此种反应，它会迫使人们陷入一种不利的社会处境？

The big disadvantage is greater competition for scarce resources .

一大坏处则是对稀缺资源的竞争加剧。

Disadvantage is clearly passed on early , and not just through the genes .

显然，不利条件是从早期传下来的，而不仅仅是通过基因。

They were worried that the impasse had already left them at a disadvantage compared with their foreign rivals .

他们曾担忧这一僵局会致使他们陷入不利且无法国外的竞争者们相提并论。