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勉強, べんきょう
1. study
2. diligence, working hard
3. experience, lesson (for the future)
4. discount, price reduction
学习
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ためになる, タメになる, 為になる
1. to be of benefit, to be beneficial, to be useful, to do one good, to be good for one
tbd
君, 公, きみ
1. you, buddy, pal
2. monarch, ruler, sovereign, (one's) master
3. he, she
你,伙计,老兄;君主,统治者,主权者,(某人的)主人;他,她