This resulted in passage of the Clean Air Act of 1970 and subsequent amendments in 1977 and 1990.

这导致了1970年“清洁空气法案”的通过及其1977年和1990年的修订。

youdao

One early accomplishment was the Clean Air Act of 1963, and its later amendments, which set goals and procedures for reducing automobile exhaust pollution.

最早通过的是1963年的“洁净空气法”及以后的补充条款，为减少汽车废气污染制定了目标及程序。

youdao

Simply put, the time is overdue to implement the Clean Air Act Amendments of 1990.

WHITEHOUSE: Energy and Environment Latest News | The White House

Under the authority of amendments to the Clean Air Act, the EPA mandates the use of cellulosic biofuels and fines refiners for failing to use the mandated amount.

FORBES: The EPA: The Worst of Many Rogue Federal Agencies, Part II

Baucus should be very aware of this from his experiences during the 1990 House-Senate conference committee on Clean Air Act amendments, when he failed to persuade the Senate to adopt language requiring the EPA to set CO2 emission standards for motor vehicles.

FORBES: Reining In The EPA's Reign Of Error