您要查找的是不是：
- Waldeyer rs tract 瓦耳代尔氏带状层
- 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。
- keratosis of waldeyer rs ring 咽淋巴环角化症
- Waldeyer rs tonsillar ring 瓦尔代尔氏扁桃体环
- Waldeyer rs neuron 瓦耳代尔氏神经元
- 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。
- von Gudden rs tract 冯古登束
- The expedition suffered all the rigo(u)rs of a Canadian winter. 这支探险队饱受了加拿大严冬的折磨。
- The explorers entered upon a desert tract. 勘探人员进入了一片沙漠地带。
- Spitzka rs tract 背外侧束, 斯皮茨卡氏束
- A sandy tract or dune by the seashore. 沙丘海边的沙地或沙丘
- Goll rs tract 薄束
- 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
- Sale of goods which have been used by the selle rs. （八）销售的自己使用过的物品。
