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1·We must obey the traffic rules.

我们必须遵守交通规则。

2·We must obey the traffic rules!

我们必须遵守交通法规！

3·You must obey the traffic rules.

你一定要遵守交通规则。

4·It is important to obey the traffic rules.

遵守交通规则是非常重要的。

5·Firstly, we should always obey the traffic rules.

首先，我们应该遵守交通规则。

6·Besides, car drivers should obey the traffic rules.

此外，汽车驾驶人应该遵守交通规则。

7·I don't know if people will obey the traffic rules.

我不知道人们是否会遵守交通规则。

8·Daddy always says: everyone must obey the traffic rules.

爸爸经常讲：人人都应该遵守交通规则。

9·All in all, a good citizen should obey the traffic rules.

总而言之，一个好市民应该遵守交通规则。

10·Everyone should realize that and then obey the traffic rules.

每个人都应该了解到这一点并遵守交通规则。