The automotive exhaust emission will do harm to people's health and destroy the ecological balance.
机动车尾气排放不仅危害人们身体健康，同时也破坏了生态环境。
It is very necessary to control automotive exhaust emission for the protection of atmosphere environment that mankind relies for existence.
为保护人类赖以生存的大气环境，必须严格控制汽车废气排放。
The catalyst for automotive exhaust purifying has become one of the main for emission controlling, and the evaluation methods is emergency currently.
汽车尾气净化催化剂已成为控制汽车尾气排放的主要措施之一。
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