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先ほど, 先程, さきほど
1. a short while ago, a moment ago, just now, some time ago
刚才,之前
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