| 1. | Grab the back risers while you wait to launch in unstable conditions
天气条件不理想，当你在等待好时机起飞时，最好抓住后组主提带。 |
| 2. | This sphenoid can also be approached through the ethmoid sinus . approximately 7 cm from the nasal spine ,
也可以通过后组筛窦进入蝶窦，从鼻脊向后约 |
| 3. | Steering without the brakes is possible with back risers and / or body weight shift
除了用煞车转弯外可用后组主提带或身体移动重心转移来使伞衣转弯。 |
| 4. | When disease involves the sphenoid , the sinus can be penetrated either intranasally or through the posterior ethmoid
当病变累及蝶窦，可以经鼻内和后组筛窦进入蝶窦。 |
| 5. | The posterior ethmoid cells are easily identified as they are larger , wider , and fewer in number than anteriorly
后组筛窦的气房一般大而宽，在数量上也少于前组筛窦，容易确定。 |
| 6. | Dissection is then carried posteriorally along the inferior border of the ethmoid to the lamina basalis . through the lamina basalis lies the posterior ethmoid
接着向后沿筛窦的下缘切除筛窦至基板，通过基板即进入后组筛窦。 |
| 7. | Should be complete and the posterior limit of the ethmoid attained . at this point , the straight suction can be used to break through the bony division between the two sinuses
，完成筛窦切除并到达后组筛窦的后界，在此处用可以用直吸引器将两窦之间的骨壁破开并以 |
| 8. | The posterior limit of the posterior ethmoid is the skull base . at this point , it is more solid than it is anteriorly and serves as a reliable and safe location for its identification
后组筛窦的后界是颅骨，在此处，比前方坚实的骨质，可以做为确定后界可靠和安全的标志。 |
| 9. | The device is used to debride polyps intranasally until normal structures can be identified . uncinectomy and maxillary meatotomy are then performed in the usual fashion , using conventional instruments . the ethmoid is entered with the tip of the blade and dissection performed posteriorly , remaining low in the ethmoid until the basal lamella is penetrated and the posterior ethmoid is entered
通常用旋切刀来清除鼻内息肉直达正常的组织，然后用传统器械进行钩突切除和上颌窦窦口扩大，再用刀尖进入筛窦，向后低位切除，至穿透中鼻甲基板而进入后组筛窦。 |
