事实上，美国艺术自上世纪初就以重要的方式发生变化。

Actually, American art had been changing in important ways since the beginning of the century.

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他说，二十世纪初以来，美国一直是全 球最大的整体能源消费国。

The U.S. had been the biggest overall energy consumer since the early 1900s, he said.

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美国女性作家自上个世纪初以来，开始长成特立独行的一支力量。

American female writers has become a special power since early last century.

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他们是从美国专利1454911，从1919年，另一个20世纪初，汽车的专利。

They are from US patent 1,454,911, from 1919, and another early 20th century vehicle patent.

youdao

他们是从美国专利1454911，从1919年，另一个20世纪初，汽车的专利。

They are from US patent 1,454,911, from 1919, and another early 20th century vehicle patent.

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