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困難， こんなん
1. difficulty, hardship, trouble, distress
2. infeasibility, inability (to carry out)
困难；不可行性，无能为力（执行）
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
