Thirteen states from all regions of the country announced a plan to impose new controls on pollution from truck and bus engines in that they will jointly adopt emission limits that would be far stricter than the federal rules.
to impose new controls on pollution from truck and bus engines in that they will jointly adopt
to impose new controls on truck and bus engines' pollution by the joint adoption of
to impose new controls on pollution from truck and bus engines by jointly adopting
for imposing new controls on pollution from truck and bus engines, and jointly adopting
for imposing new controls on truck and bus engine pollution in the joint adoption of
B.C ing短语表达的是一种“过程”,通常在句中没有明确的时间终点,相反地,名词短语一般在句中具有明确的时间终点.
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