6. process: the progression.

8. yet are green: i.e., still in your youth.

10. figure: (1) number. (2)shape.   no pace perceived: i.e., at a rate too small to be detected.

11. sweet hue: sweet appearance; sweet complexion.   still doth stand: i.e., always stays the same.

13. thou age unbred: thou generations unborn.

14. ere: before.