N a landing halfway up a flight of stairs 到阶梯一半处的降落
It was this thought that caused John Martin, once head of the Moss Landing Marine Laboratories in California, to declare, "give me half a tanker of iron, and I'll give you an ice age."
这个想法导致赵恩•马汀断言，“给我半油轮的铁，我将给你一个冰河时代。”赵恩•马汀曾是位于加利福尼亚的苔陆海洋实验室的领导。
At most airports, traffic controllers organise the approach and landing order of incoming planes in their last half-hour or so of flight.
在许多飞机场，交通管理人员在飞机行程的最后半小时里下达可以靠近或降落的各项指令。
But first it faces a long, 354-million-mile (570-million-kilometer) journey to get there, taking about eight and a half months before landing in August 2012.
当然，首先它得面对一个漫长的570多万公里的旅程，大约要到明年八月份，就是八个半月才能到达火星。
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