求翻译：　　“支持环保的同时，还能节省成本。”昨天上午，记者遇到了环宇驾校的姚师傅，他告诉记者，改装了天然气后，就算是在练习场里给学员练倒车，每天也能省下40元。记者在采访中了解到，天然气价格比汽油、柴油低，天然气汽车燃料费用一般能省30%以上，教练车10个月内就能收回成本。相对汽油而言，压缩天然气燃点高、密度低、爆炸极限窄，是一种更为安全的燃料， 而且天然气汽车尾气中不含硫化物和铅，一氧化碳、碳氢化合物、氮氧化合物排放量分别降低97%、72%、39%，更是一种清洁能源。是什么意思？

正在翻译，请等待...

"Support for environmental protection, it is also able to save costs. " Yesterday morning, the reporters encountered huan yu driving schools of Yao, the master, he told reporters after natural gas, even if it is modified in practice area, reversing the trainees practiced every day, it can save $40.

　　“Support environmental protection at the same time, but also can save the cost.” Yesterday in the morning, reporter has run into Worker Yao who the world harnesses the school, he tells reporter, after re-equipped the natural gas, even if is practices the back-draft in the practice field to the stu

　　"Support environmental protection at the same time, can save costs. "Yesterday morning, reporters encountered a Yao huanyu driving school master, he told reporters that modified the gas, even in practice give students practice in reverse, can save $ 40 every day. Journalists learned in an intervie

　　"Support environmental protection at the same time, can save costs. "Yesterday morning, reporters encountered a Yao huanyu driving school master, he told reporters that modified the gas, even in practice give students practice in reverse, can save $ 40 every day. Journalists learned in an intervie