立彬の日本語
ダイヤモンドは本来堅いものだ。
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Diamond is essentially hard.
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ダイヤモンド， ダイアモンド
1. diamond
2. diamond, infield
3. diamonds (suit)
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本来， ほんらい
1. originally, primarily
2. essentially, intrinsically, naturally, by nature, in (and of) itself
3. proper, rightful, legal, normal
本来
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硬い， 固い， 堅い， 緊い， かたい
1. hard, solid, tough
2. stiff, tight, wooden, unpolished (e.g. writing)
3. strong, firm (not viscous or easily moved)
4. safe, steady, honest, steadfast
5. obstinate, stubborn
6. bookish, formal, stuffy
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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
もの， もん， モノ， 物
1. thing, object, article, stuff, substance
2. one's things, possessions, property, belongings
3. things, something, anything, everything, nothing
4. quality
5. reason, the way of things
6. used to emphasize emotion, judgment, etc., used to indicate ...
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