Vast tracts of the country are wild and undeveloped.乡间大片大片的荒地尚未开发。vast tracts of forest大片大片的森林There are tracts of desert in Australia.澳大利亚有大片沙漠....

n.大片土地( tract的名词复数 )，地带，（体内的）道，（尤指宣扬宗教、伦理或政治的）短文...

tracts的音标：...

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 w...