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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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始まる， はじまる
1. to begin, to start, to commence
2. to happen (again), to begin (anew)
3. to date (from), to originate (in)
开始；再次发生，重新开始；起源于
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