viral nucleic acid的用法和樣例：
例句
- The inert extracellular form of the virus, termed a virion, penetrates the host membrane and liberates the viral nucleic acid into the cell.
多數情況下，病毒核酸被宿主細胞核糖體翻譯，繼而產(chǎn)生復制和包裝產(chǎn)生子代病毒所需的酶類(lèi)。 - Virus capsid is surrounded by a layer of the virus nucleic acid outside the protein, by a certain number of tablets of the composition of the shell.
病毒衣殼是包圍在病毒核酸外的一層蛋白質(zhì)，由一定數量的殼粒組成。
