At the beginning of the nineteenth century, in 1800, paper was handmade out of cloth — that's the way they made it.

在19世纪初叶，即1800年，当时的人用布料手工制纸。

youdao

At the beginning of the twentieth century, life expectancy at birth in America was 47.3 years, and in the middle of the nineteenth century it was less than forty.

在二十世纪初，美国的生命预期是47.3岁，而在19世纪中期还不到40岁。

youdao

At the beginning of the nineteenth century, Jean-Baptiste Lamark attempted a fuller explanation.

VOA: special.2009.12.01

At the beginning of the nineteenth century, in 1800, paper was handmade out of cloth-- that's the way they made it.

在19世纪初叶，即1800年，当时的人用布料手工制纸。

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