「一勞永逸」

(pos:語句)
<explanation>
yue:辛苦一次，以後唔使煩同一件事
eng:to settle a matter once and for all; by one's supreme effort one can gain a lasting repose
<eg>
yue:做激光矯視咪一勞永逸囉，唔使再戴眼鏡。 (zou6 gik1 gwong1 giu2 si6 mai6 jat1 lou4 wing5 jat6 lo1, m4 sai2 zoi3 daai3 ngaan5 geng2.)
eng:If you don't want to wear glasses anymore, settle the matter once and for all by doing the laser eye surgery.