on; on top; upon; first (of two parts); previous or last (week etc); upper; higher; above; previous; to climb; to go into; above; to go up; to attend (class or university); third tone of putonghua[cedict]
一
yīㄧ
one; 1; single; a (article); as soon as; entire; whole; all; throughout[cedict]
高一
(n) (See 高校) first year in high-school; first year highschool student[edict]
低
dīㄉㄧ
to lower (one's head); to let droop; to hang down; low; to incline; beneath; low[cedict]
的
deㄉㄜ˙
díㄉㄧˊ
dìㄉㄧˋ
of; structural particle: used before a noun, linking it to preceding possessive or descriptive attributive[cedict]