| 1. | Large tracts of wasteland have become a granary ...
荒滩变成米粮川。 |
| 2. | They opened up large tracts of wasteland .
他们开垦了大片荒地。 |
| 3. | In the past nothing could grow on this tract of land .
过去这块地不立苗。 |
| 4. | Fine bubbles originate in the lower respiratory tract .
小汽泡则来自下呼吸道。 |
| 5. | He wrote a tract on this subject .
他曾对此写了一篇短文。 |
| 6. | What he saw was a tract of sand .
他看到的就是一片沙地。 |
| 7. | The respiratory tract conveys oxygen-rich air to the lungs .
呼吸道给肺输送富氧的空气。 |
| 8. | Drainage is usually carried out after biliary tract surgery .
通常在胆道手术后进行引流。 |
| 9. | The bay shore of the silverthorn tract was very irregular .
银刺地带那儿的海岸线曲折蜿蜒。 |
| 10. | Respiratory tract fluid is the major product of the normal lung .
呼吸道液体是正常肺的主要产物。 |
