立彬の日本語
運動選手はよいコンディションを保たねばならない。
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An athlete must keep in good condition.
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運動選手， うんどうせんしゅ
1. athlete
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良い， 好い， 善い， 佳い， 吉い， 宜い， よい， えい
1. good, excellent, fine, nice, pleasant, agreeable
2. sufficient, enough, ready, prepared
3. profitable (deal, business offer, etc.), beneficial
4. OK, all right, fine, no problem
5. easy to ...
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コンディション， コンデション
1. condition
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を
1. indicates direct object of action
2. indicates subject of causative expression
3. indicates an area traversed
4. indicates time (period) over which action takes place
5. indicates point of departure or separation of action
6. indicates object of d...
表示动作的直接对象；表示经过的场所；表示离开或分开的点
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保つ， たもつ， もつ
1. to keep, to preserve, to hold, to retain, to maintain, to sustain
2. to last, to endure, to keep well (food), to wear well, to be durable
保持，保存，持有，保留，维持，支撑；持久，经久耐用，保存良好(食物)，耐磨，耐用
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なければならない， なければなりません， なければいけない
1. have to do, must, should, ought to
必须，应该
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
