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を

1. indicates direct object of action 2. indicates subject of causative expression 3. indicates an area traversed 4. indicates time (period) over which action takes place 5. indicates point of departure or separation of action 6. indicates object of d...

表示动作的直接对象；表示经过的场所；表示离开或分开的点

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一つずつ， 一つづつ， 一つ宛， ひとつずつ， ひとつづつ

1. one by one, one each, one at a time

一个一个，一次一个

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取り出す， 取出す， 取りだす， とり出す， とりだす

1. to take out, to produce, to pick out 2. to fetch, to retrieve

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；表示与另一选项（无论是否明确提及）形成对比；表示强调

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