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通常， つうじょう

1. usual, ordinary, normal, regular, general, common

通常的，普通的，正常的，常规的，一般的，常见的

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睡眠， すいみん

1. sleep

睡眠

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二つ， ２つ， ふたつ

1. two

两个

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からなる， から成る

1. consists of, comprises, is made up of

tbd

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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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