adj.不擁擠的；寬敞的
The CAB did not regulate rates, but it controlled entry into city pairs and used that control to limit entry to the point that flights were frequent and uncrowded. 民航局沒有對費率進行管制，但是它設(shè)限進入大城市并一次把門檻設(shè)定到航班重組而且不擁擠的水平。
