Most scientists say life’s basic chemicals formed on Earth.
绝大多数科学家认为，构成生命物质基础的化学元素都来自地球本身。
Many scientists had studied the dance but no one had questioned its basic function.
许多科学家研究这种舞蹈，但没有人质疑它的基本功能。
The same basic process takes place in humans, scientists say.
科学家说，同样基本的过程也发生在人类。
Scientists have known since 1952 that DNA is the basic stuff of heredity.
1952年以来，科学家们就知道DNA是遗传的基础物质。
Scientists have known since 1952 that DNA is the basic stuff of heredity.
1952年以来，科学家们就知道DNA是遗传的基础物质。
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