Warning: file_put_contents(): Only 0 of 8867 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu.com/index.php on line 58 roll hesitation是什么意思，roll hesitation的翻译，roll hesitation音标、读音、用法和例句_英語字典
With the helicopter moving backwards at medium pace, the helicopter will be aileron-rolled twice, each roll being clearly delineated by 4 hesitation points. 直陞機中速後退飛行的過程中做兩個四位橫滾，橫滾的四個停頓點要清楚。