在1,000英尺的高度飞行时，他听到旋翼发出一种奇怪的噪音。Flying at 1,000 ft. he heard a peculiar noise from the rotors.给我们在空置的大楼西翼分了一间办公室。We were given an office in the empty west wing.他因驾驶的单翼飞机失速坠地而丧生。He was killed when his monoplane stalled and ...
An aircraft gaining speed during take - off is evidently not an inertial system.一架正在加速起飞的飞机,显然不是惯性系统.In undisturbed inertial motion, the angular momentum is constant.在无扰动惯性运动中, 角动量是恒定的.That inertial systems exist is a st...
All of a sudden my heart hardened against her.突然间我对她硬起了心肠。All of a sudden she didn't look sleepy any more.她突然看起来一点都不困了。"So why did he get interested all of a sudden?"— 'Search me.'“那他为什么突然感兴趣了？”——“我怎么知道。”...