立彬の日本語
石油は文明の発達において重要な役割を果たしてきた。
tbd
Oil has played an important part in the progress of civilization.
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石油， せきゆ
1. oil, petroleum
2. kerosene, paraffin
石油
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文明， ぶんめい
1. civilization, civilisation, culture
2. Bunmei era (1469.4.28-1487.7.20)
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発達， はったつ
1. development, growth
发展，成长
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において， に於いて， に於て
1. at (a time or place), in, on
2. in (a situation, matter, etc.), on (a point), when it comes to, regarding, with respect to, in (terms of), as to, as for
3. on the part of, under the authority of, in the name of
在，于；在(一种情况、一件事等)中、在(一点上)、当涉及到、关于、就(方面)而言、至于、至于；由以下方面、根据以下方面的授权、以以下方面的名义实施
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重要， じゅうよう
1. important, essential, significant, major, key, principal
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役割を果たす， やくわりをはたす
1. to play a role, to serve a function, to play a part
tbd
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
の
1. indicates possessive
2. nominalizes verbs and adjectives
3. substitutes for "ga" in subordinate phrases
4. (at sentence-end, falling tone) indicates a confident conclusion
5. (at sentence-end) indicates emotional emphasis
6. (at sentence-end, risi...
句尾起强调作用；助词，表示所有关系
