/pe?nz/be at pains to dosomethingtotryvery hard to do something:尽心竭力,花大力气做…She is at pains topointout how muchworkshe has done.她极力表白她做了的工作是那么多。go to/take great pains to dosomethingto make a lot ofeffortto do something:不辞劳苦做…I went togreatpains toselectthebeststaffavailable.我煞费苦心地从现有人员里挑选最好的员工。SMART Vocabulary: related words and phrasesEffort and expending energy
assiduity
assiduous
assiduously
assiduousness
be running on emptyidiom
blood
elbow grease
fight
hamster wheel
hard at itidiom
heavy lifting
heroically
kill
push
rearguard action
set/putyourmind tosomethingidiom
shot
slog
slugger
strenuous
See more results ?(Definition ofpainsfrom theCambridge Advanced Learner's Dictionary & Thesaurus? Cambridge University Press)#https://dictionary.cambridge.org//dictionary/english/pains##