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平均， へいきん， へいぎん

1. average, mean 2. balance, equilibrium

平均

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時間， じかん

1. time 2. hour 3. period, class, lesson

时间的单位：小时；小时；时间，时刻

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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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彼， かれ

1. he, him 2. boyfriend

他

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は

1. indicates sentence topic 2. indicates contrast with another option (stated or unstated) 3. adds emphasis

指示句子的主题

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に

1. at (place, time), in, on, during 2. to (direction, state), toward, into 3. for (purpose) 4. because of (reason), for, with 5. by, from 6. as (i.e. in the role of) 7. per, in, for, a (e.g. "once a month") 8. and, in addition to 9. if, although

tbd

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