Nopains,nogains.不劳则无获。
I'msorrytotroubleyoualot.劳您费心了。
Willyoupleasedomeafavour[givemeahand]?劳你帮个忙。
rewardwithfoodanddrink;犒劳
bringgreetingsandgiftstoarmyunits劳军
meritoriousservice;勋劳
warexploits;one'scontributionsinwork汗马之劳
troublebetweenlaborandmanagement劳资纠纷
willinglybeartheburdenofoffice;任劳任怨
breakdownfromconstantoverwork积劳成疾
LaoHui劳晖