立彬の日本語
ぼくはこの重要な問題に注意を集中していなければならない。
tbd
I have to keep my mind on this important question.
1,140
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この， こん， 此の， 斯の
1. this
2. last (couple of years, etc.), these, past, this
3. you (as in "you liar")
这个；最近（几年等）、这些、过去、这个；你（例如指“你这个骗子”）
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重要， じゅうよう
1. important, essential, significant, major, key, principal
tbd
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問題， もんだい
1. question (e.g. on a test), problem
2. problem (e.g. societal, political), question, issue, subject (e.g. of research), case, matter
3. question (i.e. doubt)
4. public discussion, controversy
5. trouble, problem, inconvenience, difficulty
问题（例如在考试中），难题；麻烦、问题、不便、困难；问题（如社会性、政治性问题）、疑问、议题、课题（如研究课题）、案例、事项；疑问；公开讨论，争议
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注意を集中する， ちゅういをしゅうちゅうする
1. to concentrate one's attention, to be engrossed in
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なければならない， なければなりません， なければいけない
1. have to do, must, should, ought to
必须，应该
は
1. indicates sentence topic
2. indicates contrast with another option (stated or unstated)
3. adds emphasis
指示句子的主题
に
1. at (place, time), in, on, during
2. to (direction, state), toward, into
3. for (purpose)
4. because of (reason), for, with
5. by, from
6. as (i.e. in the role of)
7. per, in, for, a (e.g. "once a month")
8. and, in addition to
9. if, although
tbd