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上流， じょうりゅう

1. upper stream, upper course, upper reaches 2. upstream 3. upper classes

tbd

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階級， かいきゅう

1. (social) class 2. rank, grade

社会阶层；职级，等级

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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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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

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ひと， ヒト， 人

1. person, someone, somebody 2. human beings, mankind, man, people, humans 3. human (Homo sapiens) 4. (other) people, others 5. character, personality, nature 6. capable person, competent person, suitable person, right person 7. adult, grown-up 8. I,...

人，某人；人，人类

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だ

1. be, is

断定助动词，是，是也

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