The holidays are here and the nation's airports are busier than ever –thousands of airplanes takingoffandlanding.
假日降临，这片土地上的空港繁忙甚于平日——数以千计的飞机在起飞和降落。
2
This paper described the primary analysis of a new model helicopter ground resonance in takingoffandlanding by employed classical spatial dynamic model.
对某新型直升机垂直起落状态“地面共振”初步分析，采用经典的空间动力模型进行计算。
3
Thus, for passengers at an airport who expect to hear airplanes takingoffandlanding, there may be a lot of sound, but not much noise (that is, they are not bothered by the noise).