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1·If we take a pen and hold it in the air and let go off it, before it's fallen the proposition that it will fall when released is a matter of fact.

如果我们在空中举起一支笔，然后放手，在它落地之前，它是否真正会落地呢，关于实体物质的命题就这个产生了。

2·Web episodes keep viewers interested during the summer when broadcast shows go off-air.

广播电视节目播完后，网络提供的情节能让观众一整夏都保持兴趣。

3·It has a long way to go to operate an air wing, provide air, surface, and sub-surface defenses for the carrier, supplying the carrier, and training the personnel to operate it. That is many years off.

形成空中作战联队，为航母提供空中，表面，次表面的防御，航母供给以及人员培训和操作等方面都还有很长的路要走。

4·Off the bikes you'll take a flight out to Everest, go on an elephant safari and hot air balloon over the Kathmandu Valley.

下了摩托车你可以乘飞机去喜马拉雅山观光，可以骑大象去巡游，或者乘上热气球在加德满都山谷飞行。 价格从5 994英镑起。