Gunpowder was used in China as far back as the 11 th century.

远在公元11世纪,中国已使用火药.

《现代汉英综合大词典》

As far back as 1920 s attention was directed towards the problem.

早在20年代,人们就注意这一问题了.

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I knew him as far back as 1904.

我早在1904年就认识他了.

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As far back as February 1923, Paul Harris wrote, Rotary is not an organization for retrospection.

早在1923年2月, 保罗哈利斯写著: [轮社并非缅怀过去的社团.

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The book ranges historically as far back as the Florence of the Renaissance.

这部书一直回溯到文艺复兴时期佛罗伦萨的历史.

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As far back as I can remember you have always been there when I needed you.

在我的记忆里,我需要你时,你总在我身边.

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