Randolph's work was exclusively concerned with the effects of pollution on health.伦道夫的著作专门论述污染对健康的影响。The snowcoach concept in Yellowstone provides low-impact, low-pollution access.在黄石公园里使用雪车这一想法，为人们提供了一种对环境低影响、低污染的游...
他中饭吃一根香蕉和一块楔形的奶酪。He had a banana and a wedge-shaped cheese for lunch.他中饭吃一根香蕉和一块楔形的奶酪.He had a banana and a wedge of cheese for lunch.楔形的作用有助于在低压差应用中产生紧密的密封.Wedging actions help affect a tight seal in low differential pr...
Whole neighbourhoods have been squashed flat by shelling.整个小区已被炮弹夷为平地。Our route follows the Pacific coast through densely populated neighbourhoods...我们的路线沿着太平洋海岸，途经人口稠密的街区。Whole neighbourhoods have been squashed flat by ...