As we come in to land, it's impossible not to note that Saigon's airport was obviously once much larger - the Outlines of buildings long gone are still clear from the air.
当飞临机场即将着陆时，不可能不注意到的是明显又大了许多的西贡机场——从空中也可以清晰地看见机场建筑物的轮廓。
But it is worth remembering that just over a century ago, heavier-than-air flight seemed an impossible dream.
但是值得回忆的是仅仅在一个世纪以前，重于空气的飞行似乎是个不可能实现的梦想。
For civilians or for soldiers on the battlefield, however, an SCBA system is nearly impossible to manage because of the expense and the limited air time.
对战场上的平民和士兵而言，由于价格昂贵、气量有限，SCBA系统几乎不可能达到预期效果。
Wuxi was among the dirtiest cities I'd ever visited: the 100-degree-fahrenheit air was almost impossible to breathe.
无锡是我到过的最潮湿的城市之一：100华氏度的气温几乎让人窒息。
The absence of air and water makes it impossible to live on the moon.
因为缺乏空气和水，所以(人们)在月球上居住是不可能的。
It is impossible to give any details of the plan for rebuilding the town center. At this stage it is only in the air.
目前还不可能拿出任何重建市中心的详细计划，因在这个阶段，它还只是空中楼阁而已。
Finding it as impossible to touch her as to catch a humming -bird in the air he took from his hat the gold chain that was twisted about it and threw it to the child.
但他发现要想碰到她简直象抓住空中飞鸣而过的鸟儿一样根本不可能，于是就从他的帽子上取下缠在上边的金链，扔给了那孩子。
Since its chemical character is very active, Mg alloy is prone to oxidation and burning, which makes it impossible to be melted and cast in air.
但由于镁的化学性质活泼，非常容易氧化、燃烧，导致镁合金无法在大气条件下直接进行熔炼和浇注。
Finding it as impossible to touch her as to catch a humming-bird in the air he took from his hat the gold chain that was twisted about it and threw it to the child.
但他发现要想碰到她简直象抓住空中飞鸣而过的鸟儿一样根本不可能，于是就从他的帽子上取下缠在上边的金链，扔给了那孩子。
Air defense of naval formation is one of the main task of naval warfare, it's impossible to get victory by artificial decision in air defense making.
舰艇编队对空防御是现代海战的主要任务之一，人工进行编队对空防御决策已经难以满足现代作战的需要。
But the deeper lines are trickier: space is so tight that there is nowhere for waste heat to go, which makes traditional air-conditioning impossible.
然而深层隧道地铁不容易指望了：空间过于狭小无法排放废气，这就没法使用传统空调。
No air conditioning in summer, people are almost impossible to work and rest.
在夏天没有空调，人们几乎无法工作和休息。
No air conditioning in summer, people are almost impossible to work and rest.
在夏天没有空调，人们几乎无法工作和休息。
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