(zài, ㄗㄞˋ) (located) at; (to be) in; to exist; in the middle of doing sth; (indicating an action in progress) [CE-DICT]
开
(kāi, ㄎㄞ) to open; to start; to turn on; to write out (a medical prescription); to operate (vehicle); abbr. for 開爾文|开尔文 degrees Kelvin [CE-DICT]
玩
(wán, ㄨㄢˊ) toy; sth used for amusement; curio or antique (Taiwan pr. wan4); to play; to have fun; to trifle with; to keep sth for entertainment [CE-DICT]