为了保证万无一失，胡安让他的非地质专业的室友来听他的演讲。
To be absolutely safe, Juan asked his roommate, who was not a geology major, to listen to the speech.
马塞林·布尔指出，在7万至3.5万年前的尼安德特人中，拉沙普勒-奥克斯圣徒个体的大脑左半球略大于右半球。
Among Neanderthalers of 70,000–35,000 years ago, Marcellin Boule noted that the La Chapelle-aux-Saints individual had a left hemisphere slightly bigger than the right.
尼安德特人与人类祖先一起在欧洲生活了数万年，直到大约4万年前灭绝。
The Neanderthals lived alongside human ancestors in Europe for tens of thousands of years, before dying out about 40,000 years ago.
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