laser night-time reconnaissance device

The real world is a world of incomplete information; consumers often do not know the existence and price information of the merchandise he wanted to purchase.

现实的世界是一个不完全信息的世界，消费者往往并不知道他要购买的那种商品的全部品牌及其价格等有关信息。

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With his one arm, he used to hook a chair on a long pole, then arc it upwards in the air where he would slide it onto ceiling hooks until someone wanted to purchase it.

他曾经用他的一只胳膊把一个椅子挑在长竿上，然后把它挂到天花板的钩子上，直到有顾客想买它。

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The Philippines, the world's largest buyer of the grain, said yesterday it wanted to purchase 500,000 tonnes after it failed to buy a similar amount earlier this month.

全球最大的大米进口国菲律宾昨日表示，希望购买50吨大米。本月早些时候，菲律宾购买同样数量大米的愿望未能实现。

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