1·According to the Pentagon, night missions include extensive ground operations, takeoffs and landings, and the visual identification of targets, all of which occur in the cover of darkness.
按照五角大楼的要求，夜间任务包括广泛的地面作战、起飞和着陆，以及黑暗笼罩下的目标的视觉辨认。
2·Wheel bearing fractures or high-energy refused takeoffs often result in high local heat on an axle.
机轮轴承的断裂和高能中断起飞通常都是由于轴上产生了局部的高热量。
3·Always try to keep the number of landings you make equal to the number of takeoffs you've made.
一定要努力让着陆的次数与起飞的次数持平。
4·His takeoffs and landings are a mess: sloppy and violent, they invariably leave a heap of trouble and general rubble in his wake.
的臭虫状的太阳眼镜。他起飞和降落也是一团糟：马虎粗暴，总在身后留下一堆的麻烦和乱石。
5·Even their takeoffs and landings usually look effortless.
就连它们的起飞和降落通常看起来也毫不费劲。