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The Japanese word

励む

is pronounced
hagemu | はげむ
means
to brace oneself, to endeavour, to strive, to make an effort
Examples:
彼は勉強に励んでいる。
kare wa benkyō ni hagen de iru.
He is diligent in his study.
彼は著述に励んでいた。
kare wa chojutsu ni hagen de i ta.
He was closely occupied with his writing.
今まで以上にいっそう勉強に励みなさい。
ima made ijō ni issō benkyō ni hagemi nasai.
You should study still harder.
みんなそれぞれ自分の仕事に励んでいた。
minna sorezore jibun no shigoto ni hagen de i ta.
Everybody was going about his business.
彼は弁護士になるために日夜勉強に励んだ。
kare wa bengoshi ni naru tame ni nichiya benkyō ni hagen da.
He studied day and night with a view to becoming a lawyer.
彼は休養するどころか、かえっていつもより仕事に励んだ。
kare wa kyūyō suru dokoroka, kaette itsumo yori shigoto ni hagen da.
Instead of taking a rest, he worked much harder than usual.
しかし、アメリカ同様日本も中流階級の平均的収入の人々が圧倒的多数を占める国なので、妻たちはメイドを雇わず、自分で何もかもに励む。
shikashi, amerika dōyō nippon mo chūryū kaikyū no heikin teki shūnyū no hitobito ga attōteki tasū o shimeru kuni na node, tsuma tachi wa meido o yatowa zu, jibun de nanimokamo ni hagemu.
However, like America, Japan is predominantly a middle-class, middle-income country, and so wives do not employ maids, but attend to everything themselves.
Examples sourced from tatoeba.org