Ever since Russia's launch of Sputnik I in the late 1950s, the United States has realized the need to improve the teaching of mathematics in the public schools.

自从俄罗斯在50年代后期发射了人造卫星之后，美国意识到在公立学校提升数学教育的需求。

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Ever since Russia's launch of Sputnik I in the late 1950s, the United States has realized the need to improve the teaching of mathematics in the public schools.

自从俄罗斯在50年代后期发射了人造卫星之后，美国意识到在公立学校提升数学教育的需求。

youdao