Using bicycle contributes greatly to people "s physical fitness as well as easing traffic jams."
使用自行车有助于人们的身体健康，并极大地缓解了交通阻塞。
Using bicycle contributes greatly to people"s physical fitness as well as easing traffic jams."
使用自行车有助于人们的身体健康，并极大地缓解…
Using bicycle contributes greatly to people"s physical fitness as well as easing traffic jams."
使用自行车有助于人们的身体健康，并极大地缓解…
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