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陣痛， じんつう

1. labour pains, labor pains, birth pains, contractions

分娩阵痛，分娩疼痛，宫缩阵痛

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約， やく

1. approximately, about 2. promise, appointment, engagement 3. shortening, reduction, simplification 4. contraction (in phonetics)

tbd

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秒， びょう

1. second (unit of time) 2. arc second

tbd

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が

1. indicates the subject of a sentence 2. indicates possession 3. but, however, (and) yet, though, although, while 4. and 5. used after an introductory remark or explanation 6. regardless of ..., whether ... (or not), no matter ... 7. indicates a des...

tbd

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