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。

youdao

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。

youdao

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。

youdao

Everybody wants to go for a wonderful hike and start off with fresh air and all the things we're going to have in our lives the whole next year.

VOA: special.2009.12.28

Networks have seen that when viewer's favorite shows go off the air for an extended period of time--think the Walt Disney Co.

FORBES: Magazine Article

The authorities in Indonesia ordered television stations to go off the air at night, although they subsequently exempted broadcasts of European football matches, to which many of their compatriots are addicted.

ECONOMIST: Producers and consumers alike are hit

The DJs have since apologized, and "mutually decided" to go off the air for an undetermined period, Rhys Holleran, CEO of the Southern Cross Austereo media group, said Saturday during a news conference.

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