节省(jishěng)       economize; save

能源(nngyun) the sources of energy

灾难性(zāinnxng) disastrous

鼓励(gǔl)            encourage

税务(shuw)         tax administration

优惠(yōuhu)          preferential; favourable

肮脏(āngzāng)       dirty

陈旧(chnji)         outmoded; obsolete

思维(sīwi)        ideas; thought

意味着        signify; mean; imply