tracts的例句（tracts在句子中的用法）

• Gambell involved a grant of oil and gas leases covering tracts offshore of Alaska. 坎贝尔一案涉及到阿拉斯加近海岸的一片油气田的租借权问题.
• There are tracts of desert in Australia. 澳大利亚有大片沙漠.
• vast tracts of forest 大片大片的森林
• Vast tracts of the country are wild and undeveloped. 乡间大片大片的荒地尚未开发。
• Each sequence is made of transgressive system tracts and highstand system tracts. 认为娄山关组由7个三级层序组成,层序界面为古岩溶不整合面或暴露带,每个层序都由海进体系域和高水位体系域构成.
• Large tracts of wasteland have become a granary. 荒滩变成米粮川.
• Vast tracts of the country are wild and undeveloped... 乡间大片大片的荒地尚未开发。
• They cleared large tracts of forest for farming, logging and ranching. 他们清除了大片的森林以经营农耕、采伐与畜牧。
• ...vast tracts of empty land, much of it contaminated by years of army activity. 大片撂荒的土地，其中大部分由于经年累月的战火而受到了污染