by (indicates passive-voice sentences or clauses); to cover; to wear[cedict]
试验
shì yànㄕˋ ㄧㄢˋ
experiment; test; experimental[cedict]
过
guòㄍㄨㄛˋ
(experienced action marker); to cross; to go over; to pass (time); to celebrate (a holiday); to live; to get along; excessively; too-; surname Guo[cedict]