africa四级 /'æfrikә/

In South Africa, an HIV-prevention initiative known as loveLife recruits young people to promote safe sex among their peers.

在南非，一个名为loveLife的艾滋病预防计划招募年轻人在同龄人中推广安全性行为。

Caravanserais were roadside inns that were built along the Silk Road in areas including China, North Africa and the Middle East.

驿站是沿丝绸之路在包括中国、北非和中东在内的地区建造的路边旅馆。

Parenting tips obtained from hunter-gatherers in Africa may be the key to bringing up more contented children, researchers have suggested.

研究人员提出，从非洲的采集狩猎者那里获得的育儿建议可能是培养更快乐孩子的关键。

Tracing the history of parenting: from Africa to Europe

追溯育儿历史：从非洲到欧洲

Now, researchers have used the genomes of over 200 donkeys to trace their domestication back to a single event around 7,000 years ago in East Africa - about 3,000 years before humans tamed horses.

现在，研究人员利用了200多匹驴的基因组，追溯它们的驯化历史，发现大约在7000年前的东非发生了一次单一的驯化事件——这比人类驯化马早了约3000年。