题目

英语翻译
句子是when you are crossing a road,stand well back from the curb while you wait for the light to change.
every meter really does count when you are close to traffic.
as the traffic begins to move,fumes can be reduced in just a few seconds.
so holding your breath for just a moment can make a difference,even though it might sound silly.
这一段都不是太懂,能不能翻译一下,

提问时间：2020-10-12

答案

when you are crossing a road,stand well back from the curb while you wait for the light to change.
当你过马路时,要站在马路屏障里等待红绿灯的变化
every meter really does count when you are close to traffic
当你靠近那些车辆时,每靠近一米都有着重要的意义
as the traffic begins to move,fumes can be reduced in just a few seconds
当车辆开始移动时,汽车尾气会在几秒钟内扩散开去
so holding your breath for just a moment can make a difference,even though it might sound silly.
所以,屏住你的呼吸片刻是十分重要的,即使这样做听起来很傻