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。
The team reconstructed the animals' evolutionary tree and used computer models to pinpoint the domestication event, when herders in Kenya and the Horn of Africa tamed wild asses.
该团队重建了这些动物的进化树，并利用计算机模型确定了驯化事件，即大约在肯尼亚和非洲之角的牧民驯服了野驴。
Though it's still unclear why the original domestication happened, Science News' Freda Kreier reports that the event coincided with the Sahara growing larger and drier.
尽管尚不清楚最初的驯化为何发生，但《科学新闻》的弗雷达·克雷尔报道说，这一事件与撒哈拉沙漠变得更大更干燥的时间相吻合。
They underwent multiple domestication events.
它们经历了多次驯化事件。
例句取自历年考研英语真题，翻译为机器生成，仅供学习参考。