to go; to leave; to remove; fourth tone of putonghua[cedict]
南史
shǐ ㄕˇ
History of the Southern Dynasties, fourteenth of the 24 dynastic histories 二十四史, compiled by Li Yanshou 李延壽|李延寿 in 659 during Tang dynasty, 80 scrolls[cedict]
一下
yī xiàㄧ ㄒㄧㄚˋ
(used after a verb) give it a go; to do (sth for a bit to give it a try); one time; once; in a while; all of a sudden; all at once[cedict]