federal clean air laws..

federal clean air laws.. make the air clean the clean air 英语翻译Federal emissions,Compensated,Unit injection,Air to air charge cooling,Water to air charge cooling the air was so clean,air前面要不要the 句型转换 The air today is very clean.The air today is ___ ___ clean. translate into chinese 3(3) as a result of the Clean Air Act [42 U.S.C. 7401 et seq.], the Water Pollution Control Act [33 U.S.C. 1251 et seq.], and other Federal and State laws respecting public health and the environment, greater amount to make they wany air the clean连词组句 the air is nice and clean怎么翻译? they cool our cities and clean the air I love places ______ the air is clean and nice Trees Keep the air clean.这句话的意思 About ninety percent of the air here are clean改错 clean air is good for our health意思 Lark In The Clean Air 是谁唱的? 翻译：tell a story( ) hot air( ) come clean( )急! Is the air in your city clean?（实答） The air is not clean. 问句怎么问?