立彬の日本語
宣戦布告の理由は判明していない。
tbd
The reason for declaring war is not certain.
562
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宣戦布告， せんせんふこく
1. declaration of war, proclamation of war
tbd
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理由， りゆう， わけ
1. reason, pretext, motive
理由，借口，动机
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判明， はんめい
1. establishing, proving, ascertaining, identifying, confirming
判明，确认
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