About day four, we realized that there was nothing in this chamber but hominids.

大约在第四时候，我们意识到，这间屋子里除了人科动物，什么都没有。

We know less about ourselves, curiously enough, than about almost any other line of hominids.

很有意思是，我们对自己了解，少于对人科动物几乎任何别分支了解。

The Asian hominids would have had to appear, as it were, spontaneously.

可以说，除非亚洲人科动物是自发出现。

For a time, it appears, Homo erectus was the only hominid species on Earth.

在段时期内，直立人似乎是地球上惟人属。

One area of paleoanthropological study involves the eating and dietary habits of hominids, erect bipedal primates—including early humans.

古人类学研究个领域涉及原人（双脚直立灵长类动物，包括早期人类）饮食习惯。

In fact, in 2007, in the Siwa oasis, an early hominid footprint was discovered fossilized in the rocks.

事实上，2007年在锡瓦岩石中，发现了个早期原始人足迹化石。

We evolved smooth long foreheads and agile eyebrows compared to a stiff brow ridge of archaic hominids.

与古人类僵硬眉脊相比，我们进化出了光滑长前额和灵活眉毛。

To other hominids, Homo erectus must have seemed terrifyingly powerful, fleet, and gifted.

在其他人科动物眼里，直立人肯显得个儿大、有力气、敏捷和有才干。

By the 1950s, the number of named hominid types had risen to comfortably over a hundred.

到20世纪50年代，被命名人种动物名称已达100种以上。

It has these very different hands than any kind of hominid we've ever seen before, with those long, curved fingers.

它手和我们以前见过任何种人科动物手都不样，有着又长又弯曲手指。

An upright hominid could see better, but could also be seen better.

直立人科动物看得更清楚，但也被看得更清楚。

At no time since hominids first arose on Earth has Australia not been an island.

自从人科动物第次在地球上出现以来，澳大利亚就直是块孤立陆地。

But there is also an uncomfortable overlap with the rise of a certain hominid species originating in Africa 150,000 years ago.

另个双重效应就是15万年前某些原于非洲原始人种进化。

The spacecraft gets her name from the Lucy fossil, an ancient human ancestor whose remains transform the study of hominid evolution.

“露西”号得名于“露西”化石，是古人类祖先化石，其遗骸推进了对人类进化研究。

I found my first hominid — one-in-ten-million chance — my first day. It was completely — I was hooked.

我发现了我第个人科动物化石——千万分之机会——我第就发现了。我完全被迷住了。

In addition, Homo erectus was the first hominid [HAH muh nid] to use fire.

此外，直立人是第个使用火原始人 [HAH muh nid]。

But, as early hominids expanded their group size, reciprocal grooming became too time-consuming.

但是，随着早期原始人扩大他们群体规模，互惠梳理变得太耗时了。

But I started speaking to the hominid specialists.

但我开始与人类学家专家交流。

But it's now thought that this was a different kind of hominid.

但现在认为这是种不同原始人类。

If we were hunter gatherers or ancient hominids, every one of them would probably be dead.

如果我们是狩猎采集者或远古人类，他们中每个可能都已经死了。