Not only do we have bones over at least a million years from both of these species,我们不仅拥有百万年前这两个人种的残骸

not only不仅

She is not only good at mathematics, but she is interested in English as well.

她不但擅长数学，而且对英语也感到兴趣。

He is not only strong and healthy but also very smart.

他不仅强壮健康，而且还很聪明。

at least至少

The mark-up on food in a restaurant is usually at least 100%.

餐馆食物的成本加价率通常至少是100%.

She may be slow but at least she's reliable.

她迟钝是迟钝，但无论如何她很可靠。

He's working with a pioneer in the study of ancient human behaviour,与他共事的是一位古人类行为研究的先驱

work with与 ... 共事； 与 ... 合作

It was a privilege to work with him.

和他在一起工作是一项殊荣。

We can't always combine work with pleasure.

我们并不总是能在工作中享受到乐趣。