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ために， 為に， 爲に
1. for, for the sake of, to one's advantage, in favor of, in favour of, on behalf of
2. because of, as a result of
为了；因为
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働く， はたらく
1. to work, to labor, to labour
2. to function, to operate, to be effective, to work (i.e. ... works), to come into play
3. to commit (e.g. a crime), to perpetrate, to do, to act, to practise, to practice
4. to be conjugated
工作，劳动；运作，运行，有效，起作用(即...起作用)，发挥作用；实施（例如犯罪），犯下，做，行动，践行，实践
は
1. indicates sentence topic
2. indicates contrast with another option (stated or unstated)
3. adds emphasis
指示句子的主题；表示与另一选项（无论是否明确提及）形成对比；表示强调
