166.I am certain that...
Reference:我相信...
167.The future of economic cooperation with China should be viewed with a combination of enthusiasm and realism.
note:注意这里的"be viewd"
Reference:我们应该带着满腔热忱和现实主义的精神来看待与中国未来的经济合作.
168.越来越(流行)
note:不一定是more and more
Reference:increasing population
169.to stay out traffic jams
Reference:以避免交通堵塞
170.College and high school students find biking an economical alternative to cars and buses.
note:喜欢这里的alternative to 的用法
Reference:大中小学生把自行车当作汽车和公交车的廉价代用工具.