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]
发现
fā xiànㄈㄚ ㄒㄧㄢˋ
to find; to discover[cedict]
还
háiㄏㄞˊ
huánㄏㄨㄢˊ
also; in addition; more; still; else; still; yet; (not) yet[cedict]
pay back; return; surname Huan[cedict]
没
méiㄇㄟˊ
mòㄇㄛˋ
(negative prefix for verbs); have not; not[cedict]