This is the 949th most frequent Chinese word.
核酸
"Nucleic acid."
In this sentence, 核酸 refers to 'nucleic acid' as a biological term, specifically in the context of testing for it (e.g., for health diagnostics).
我们需要去做核酸检测。
We need to go for a nucleic acid test.
Here, 核酸 is used in its general scientific meaning to describe substances like DNA and RNA that store genetic information.
核酸是遗传信息的载体。
Nucleic acid is the carrier of genetic information.
In this context, 核酸 denotes its role and usage within the field of medicine, emphasizing its scientific and practical significance.