Palm oil is environment-friendly.

棕榈油对环境无害。

Bicycle is a cheap and environment-friendly means of transport.

自行车是一种既便宜又环保的交通工具。

The environment-friendly thixotropic antirust oil is composed of base oil and barium-free antirusting agent.

这种环保触变性防锈油，由基础油和无钡防锈剂组成。

How to choose green and environment-friendly inverters?

如何选择绿色环保型的变频器？

Biodiesel is a kind of renewable and environment-friendly energy.

生物柴油是一种可再生的绿色环保型能源。