These shrubs must have an acid, lime-free soil.

这些灌木必须要有酸性、无石灰的土壤。

《柯林斯英汉双解大词典》

'he said.' They grow on free soil.

他说，‘它们生长在自由的土地上。’

youdao

A massive oak claims its ground for 200 years or more, outcompeting all other would-be canopy trees by casting a dense shade and drawing up any free water in the soil.

200年或更久的时间里，一棵巨大的橡树占据了它的土地，投下浓密的树荫，吸收土壤中所有自由水分，打败了所有其他可能成为树冠的树木。

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The House of Representatives was controlled by members of the Free Soil Party, which opposed slavery.

VOA: special.2009.03.12

In Democracy in America there's that famous passage, or passages, when Tocqueville crosses the Ohio River, from Ohio into Kentucky, from free soil into slave soil, free state into a slave state.

在托克维尔跨越俄亥俄河,从俄亥俄进入到肯塔基州,从自由之所走向奴役之地的那段游历中,为《美国民主》贡献了数段名言

耶鲁公开课 - 美国内战与重建课程节选

They called it the Free Soil Party, because they believed in free land for free settlers.

VOA: special.2009.03.12

If he did, he might explain that the Republican party was formed around an always-uneasy alliance between Whig prosperity-mongers and Free Soil puritans.

FORBES: Preachers, Plutocrats, and Grover Norquist: But Where's The GOP Soul?

The rich, tree-free prairie soil was great for farming, but lumber had to be imported for houses and barns.

FORBES: Wisconsin Republicans Attack a Brilliant UW Historian

Their modular hydroponic system -- where plants sit in a soil-free set up with nutrients delivered through irrigation channels -- can be retrofitted to just about any wall.

CNN: Green walls create new urban jungles