(kě, ㄎㄜˇ) can; may; able to; to approve; to permit; certain(ly); to suit; (particle used for emphasis) [CE-DICT]
是
(これ) (pn) (1) (uk) (See 何れ・1,其れ・1,彼・あれ・1) this (indicating an item near the speaker, the action of the speaker, or the current topic); (2) (hum) this person (usu. indicating someone in one's in-group); (3) now; (4) (arch) here; (5) (arch) I (me); (6) (arch) certainly; (P) [EDICT]
(tōng, ㄊㄨㄥ) to go through; to know well; to connect; to communicate; open [CE-DICT]
过
(guò, ㄍㄨㄛˋ) (experienced action marker); to cross; to go over; to pass (time); to celebrate (a holiday); to live; to get along; excessively; too-; surname Guo [CE-DICT]