立彬の日本語
火事の原因は不明である。
tbd
The cause of the fire is not known.
The cause of the fire is unknown.
The cause of the fire isn't known.
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火事， かじ
1. fire, conflagration
火，火灾
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原因， げんいん， げいいん
1. cause, origin, source
原因
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不明， ふめい
1. unclear, obscure, indistinct, uncertain, ambiguous
2. unknown, unidentified
3. ignorance, lack of wisdom, lack of insight
不明，不清楚；不知道
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である
1. be, is
是、=です、=だ
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