It was against this background that Dubois began his search for ancient human bones.

正是在这样的背景之下，杜布瓦开始了他寻找古人类化石的工作。

Against this background, a modest rise in the consumption tax ought scarcely to be an issue.

在这种背景下，消费税的适度提升几乎不该是个问题。

How long can the dollar hold on against this background?

美元在这种背景下还能坚持多久？

Now the fish's darker top side is absorbing most of the strong light shining from above so it's concealed against this background too.

鱼较暗的顶部吸收了来自上方的大部分强光，所以它也隐藏在这个背景下。

It is against this background that the additional and superimposed effects of fluctuations of investment in durable goods must be examined.

正是在这种背景下，必须研究耐用品投资波动的附加和叠加影响。

And against this background, we became interested in the question whether sleep is the only condition, is the critical condition, for the formation of long -term memories.

在这种背景下，我们开始对睡眠是否是形成长时记忆的唯一关键条件这一问题产生了兴趣。