During the 20th century, petrol cars got bigger, heavier, and faster.

在20世纪，汽油车变得更大、更重、更快了。

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The practice spread during the 20th century, and became almost universal by the 1960s.

这一做法于20世纪散播，到了20世纪60年代就几乎遍布全球。

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There were once eight tiger subspecies, but three became extinct during the 20th century.

老虎曾经有过一共8个亚种，但其中三个亚种在20世纪灭绝。

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In this sense, he says the pattern appears to be similar to that,which occurred during the three 20th century pandemics.

VOA: standard.2009.05.14

Just as buildings during the 20th century were specialised by function, towns were as well, says Mr Mitchell.

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During the 20th century, however, newspapers began at least trying to appear neutral, with varying degrees of success.

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The movement spread in Europe, including Russia, during the 20th century and suffered further setbacks under Nazi and Communist dictatorships.

BBC: 'Stonewall gave me new gay role models'