The more difficult second level requires a flight of 180 seconds followed by a landing on simulated lunar terrain, complete with rocks and craters.
更困难的第二个级别，要求飞行180秒，接着在遍布岩石和陨石坑的模拟月球地形上降落。
Turning a section of the Sun Yat-sen Highway into a landing strip was part of the annual Han Kuang defense exercises that simulated a surprise attack on Taiwan's air bases this year.
将中山高速公路的一段用作起降跑道是“汉光”军事演习的一部分。 该演习每年举行一次，今年的科目是模拟台湾空军基地遭到突袭时的情况。
Under simulated condition in laboratory the relationship between landing impact force and landing impact time was studied.
在实验室模拟条件下，研究着陆冲击力与着陆冲击时间的关系。
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