Looking at these DNA sequences, we get a biological testimony to the environment these animals lived in and the experiences they survived.
通过观察这些DNA序列，我们得到了这些动物所生活的环境以及它们经历过的事件的生物学证据。
They also looked at genomes from 15 wild equids and 31 earlier donkeys that lived between about 4,000 and 100 years ago.
他们还研究了15种野生马科动物和31种大约生活在4000年前到100年前的早期驴的基因组。
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。