Metal content in tobacco leaf primarily is driven by the metal content of the soil in which it is grown, rather than resulting from processing.27.

烟叶中的重金属含量是由其产生的土壤带入的，而不是在生产加工过程中人为添加。

youdao

There was a layer of silver leaf outside the metal.

金属外边有一层银薄膜。

youdao

Also has not known how many leaf of syntheses metal door.

又不知过了多少扇合成金属门。

youdao

Aluminum was an expensive and fashionable new metal in the 1930s, and although silver leaf is more commonly used and cheaper today, Mr. Malkin went for aluminum and authenticity in the restoration by EverGreene Architectural Arts.

WSJ: The Empire State Building's Luster Returns | By Ada Louise Huxtable