立彬の日本語
彼は都市計画の分野の専門家だ。
tbd
He is an expert in the area of city planning.
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都市計画， としけいかく
1. city planning, urban planning, town planning
tbd
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分野， ぶんや
1. field, sphere, realm, division, branch
领域，范围，分支
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専門家， せんもんか
1. specialist, expert, professional, authority, pundit
tbd
彼， かれ
1. he, him
2. boyfriend
他
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