tract
n
1 large stretch or area of land 大片土地; 地带
huge tracts of forest, desert, farmland, etc 大片森林、 沙漠、 耕地等.
2 (anatomy 解) system of connected tube-like parts along which sth passes 道; 束:the digestive/respiratory/urinary tract 消化[呼吸/尿]道.
tract n pamphlet containing a short essay, esp on a religious or political subject 小册子(尤指宗教或政治内容的).