立彬の日本語
この風習の起源は１２世紀にさかのぼる。
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This custom dates back to the 12th century.
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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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風習， ふうしゅう
1. custom
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起源， 起原， きげん
1. origin, beginning, source, rise
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世紀， せいき
1. century
2. era
3. of the century (e.g. fight of the century)
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さかのぼる， 遡る， 溯る， 逆上る， 泝る
1. to go upstream, to go up (a river)
2. to go back (to the past or origin), to date back (to), to trace back (to), to be retroactive (to)
(沿河流)上溯；回溯(历史等)
の
1. indicates possessive
2. nominalizes verbs and adjectives
3. substitutes for "ga" in subordinate phrases
4. (at sentence-end, falling tone) indicates a confident conclusion
5. (at sentence-end) indicates emotional emphasis
6. (at sentence-end, risi...
句尾起强调作用；助词，表示所有关系
は
1. indicates sentence topic
2. indicates contrast with another option (stated or unstated)
3. adds emphasis
指示句子的主题；表示与另一选项（无论是否明确提及）形成对比；表示强调
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
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