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水素， すいそ

1. hydrogen (H)

tbd

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酸素， さんそ

1. oxygen (O)

tbd

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成り立つ， 成立つ， なりたつ

1. to consist of, to be made up of, to be composed of 2. to be concluded (e.g. of an agreement), to hold true (e.g. of a theory), to be valid 3. to be viable (of a business, lifestyle, etc.), to carry on, to keep going

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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と

1. if, when 2. and 3. with 4. used for quoting (thoughts, speech, etc.) 5. promoted pawn 6. indicates a question

表示引用

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から

1. from (e.g. time, place, numerical quantity), since 2. from (originator), by 3. because, since 4. out of (constituent, part) 5. through (e.g. window, vestibule) 6. after, since 7. expresses sympathy or warning

从，自……；因为；被，用于……

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