The 5' carbon has a phosphate off of it and that phosphate is linked to the 3' carbon of the next one and they all have a base hanging off the side.

'碳的磷酸基,连接到下一个戊糖的3'碳部位,它们都有连接在一侧的碱基

耶鲁公开课 - 生物医学工程探索课程节选

If I drew this altogether and this is one particular nucleic acid, now shown in more detail, all of the carbons of the pentose are shown here, the phosphate is shown, and a base is shown.

如果我把这个放在一起,这个核酸分子,让你们看得到更多细节,戊糖的五个碳都在这儿,磷酸基在这儿,碱基在这儿

耶鲁公开课 - 生物医学工程探索课程节选