立彬の日本語
彼は天文学、即ち天文の学問の偉大な権威であった。
tbd
He was a great authority on astronomy, or the science of the heavenly bodies.
890
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天文学， てんもんがく
1. astronomy
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すなわち， 即ち， 則ち， 乃ち
1. that is (to say), namely, i.e.
2. precisely, exactly, just, nothing but, neither more nor less
3. (and) then
也就是说，即；正是、恰好、就是、刚好；那么
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学問， 学文， 学門， がくもん
1. study, scholarship, learning, education, knowledge
2. discipline, branch of learning, (a) science
学问，研究、学术、学识；学科
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偉大， いだい
1. great, grand, magnificent, outstanding, mighty
伟大、杰出
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権威， けんい
1. authority, power, influence, prestige
2. (an) authority (on), expert
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である
1. be, is
是、=です、=だ
彼， かれ
1. he, him
2. boyfriend
他
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
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