您要查找的是不是：
- He owns a large tract of forest. 他拥有一大片森林。
- He had an infection in the upper respiratory tract. 他上呼吸道感染。
- A line established by sighting in surveying a tract of land. 横断线在测量一块土地时通过目视确定的线
- To the north of the river is an immense wooded tract. 河北面是一大片林地。
- STUDY ON THE SELECTION OF JUGLANS NIGRA L. 东部黑核桃优树选择研究。
- Porta Nigra of Trier. Another view. 特里尔的古罗马城门。另一角度。
- Vi min pentras pli nigra ol la nigro mem. 你把我画得比黑颜料还黑。
- The explorers entered upon a desert tract. 勘探人员进入了一片沙漠地带。
- Li pentris sin pli nigra ol la nigro mem. 他把自己画得黑得不能再黑。
- A sandy tract or dune by the seashore. 沙丘海边的沙地或沙丘
- A tract of territory had been sliced away. 领土被割去了一块。
- He wrote a tract on this subject. 他曾对此写了一篇短文。
- What he saw was a tract of sand. 他看到的就是一片沙地。
- The phylogeny of the amphibian intestinal tract. 两栖动物肠道的演化发展
- Lacking a true body cavity or digestive tract. 无体腔的，无消化道的无真正意义上的体腔的或无消化道的
- A disease of the intestinal tract. 肠病一种肠道疾病
- A tract of water for raising fish is a fish farm. 一片养鱼的水是鱼塘。
- En mi estas iom da nigra sango el iu malproksima praulo. 大概的意思懂，准确的意思有点模糊，请指教。
- To the north of the river is an immense wood tract. 河北面是一大片林地。
- A case of tinea nigra palmaris in a child is reported. 报告1例掌黑癣。患儿男,2岁。
