Some people claim that it is acceptable to use animals in any way for the benefit of human beings, while others argue that it ...

美国航空一架客机与军方直升机在华府上空相撞，造成67人丧生，这起空难发生时，雷根华盛顿国家机场（Reagan National Airport）塔台内1名航管员同时负责2人份工作。CNN专题报导指出，这并非个案，并指出美国多数机场 ...

The plane was found about 54 km southeast of Nome, a city in western Alaska. All 10 people on board were confirmed dead, the ...

For decades, Chinese athletes have been winning medals in Asian and international winter games in speed skating and figure ...

The ancient Chinese used to call their lantern riddles “word tigers,” or 文虎, as guessing a lantern riddle could be as ...

Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...

The eighth day is believed to be the birthday of millet, an important crop in ancient China. According to folk proverbs, if ...

Trump loves to be admired by the elites, and he adores money. Musk has gotten the keys to the American kingdom so he can ...

Scientists researching Alpine glaciers store ice in Antarctica. By analysing air bubbles in the ice they may be able to predict the future ...

China's first jumbo jet is expected to make its maiden flight in 2014 and get the Certificate of Airworthiness in 2016, said a senior executive from AVIC.

1 — 使用下划线 一个经常被忽视的技巧是在 Python 中使用下划线。使用下划线来保存先前计算的表达式的值。这在交互式环境中工作时非常方便。此外，还可以将下划线用作匿名变量，以在迭代期间忽略值。此外，下划线可以指示类中的私有成员，这是 Python 开发中有用的约定： data = [(1, 'one'), (2, 'two'), (3, ...