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原始， げんし

1. origin, beginning, genesis 2. primeval, primordial, primitive

tbd

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社会， しゃかい

1. society, public, community, the world 2. social studies

tbd

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物々交換， 物物交換， ぶつぶつこうかん

1. bartering

物物交换，易货

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行われる， 行なわれる， おこなわれる

1. to be done, to be practiced, to be practised, to take place, to be held, to be prevalent, to be in fashion, to be in vogue, to be current, to come into use

（被）举行，举办；实施、盛行、流行起来、正在流行、开始使用

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で

1. at, in 2. at, when 3. by, with 4. within, in 5. and then, so 6. and, then 7. let me tell you, don't you know

表示范围

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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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が

1. indicates the subject of a sentence 2. indicates possession 3. but, however, (and) yet, though, although, while 4. and 5. used after an introductory remark or explanation 6. regardless of ..., whether ... (or not), no matter ... 7. indicates a des...

tbd

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