traffic and pollution reductions 可以这么说吗traffic and pollution reductions可以这么说吗 为什么没有s'呢 是不是两个名词连起来的时候就不用‘s什么的了 一个名词的时候还是要用是吧?

traffic traffic traffic traffic traffic traffic traffic traffic traffic School rules and traffic rules.School rules and traffic rules越多越好..~帮一下忙```` without sophisticated traffic- offense detectors and a capable traffic police force,traffic laws,nowithout sophisticated traffic-offense detectors and a capable traffic police force,traffic laws,no matter how draconian,would be lax enough for hardene Everyone must be careful and o___the traffic rules. The traffic is heavy and the cost of living is down-peak and up-peak traffic patterns 翻译 Walk the street and turn right the traffic lights 英语翻译Entrance symble compact,efficient traffic and heating there are always three traffic[ ](灯):red,yellow and green between high-traffic and rarely traveled areas 怎么翻译