Firstly, DNA must be recovered from the cells or tissues of the body, and only a small amount of tissue like blood, hair, or skin is needed.是什么意思_Firstly, DNA must be recovered from the cells or tissues of the body, and only a small amount of tissue like blood, hair, or skin is needed.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句