立彬の日本語
天文学は天体の科学である。
tbd
Astronomy is the science of heavenly bodies.
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天文学， てんもんがく
1. astronomy
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天体， てんたい
1. heavenly body, celestial body, astronomical object
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科学， かがく
1. science
2. to think about scientifically, to think in terms of science
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である
1. be, is
是、=です、=だ
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