In Alberta people mine and drill for oil, potash, petrol and gas.在亚伯达,人们采矿、打井开采石油 、 碳酸钾 、 汽油和天然气.In Alberta and Saskatchewan there are many hills where dinosaur bones were found.亚伯达和萨斯喀彻温省的许多山区发现了恐龙化石.The plains of Alber...
运动员在比赛中表现出坚韧的斗志.The athletes displayed great tenacity throughout the contest.用于提取这种油的树脂取自于一种矮小坚韧的树。The resin from which the oil is extracted comes from a small, tough tree.棍子落下去,他觉得好像打在坚韧的橡胶上.He felt the rubbery solidity...