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長い， 永い， ながい
1. long (distance, length)
2. long (time), protracted, prolonged
长的
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曲がりくねる， 曲りくねる， まがりくねる
1. to bend many times, to turn and twist, to zigzag
反复弯折，蜿蜒曲折，迂回盘旋
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
