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お互いに， おたがいに

1. mutually, with each other, reciprocally, together, both

相互, 彼此, 相互, 一起, 两个都

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助け合う， たすけあう

1. to help each other, to cooperate

tbd

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彼ら， 彼等， かれら

1. they, them

tbd

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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

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