当人们把旧机油倒在地上或扔到垃圾里，它会污染环境。
When people pour old motor oil on the ground or throw it in the garbage, it pollutes the environment.
燃烧室积碳提高了排气污染。机油必须被注入以减少这类沉积。
Combustion chamber deposits increase exhaust emissions. Oils must be formulated to reduce such deposits.
本发明用废机油、废柴油和废油漆制成溃散剂，解决了铸件生产污染环境问题。
The invention employs waste machine oil, waste diesel and waste paint to produce collapsibility agent, which solves environmental pollution in cast production.
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