Culture pot experiment was used to study the effects of limestone on the content of soil available heavy meatal before planting vegetables in acid soil.

前言：采用盆栽的方式研究了蔬菜种植前施用石灰对南方强酸性土壤中有效态重金属含量的影响。

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Most Americans would no longer accept a melting pot or a cookie-cutter culture.

绝大多数美国人不再认同熔炉或饼乾模刻的文化模式。

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You understand this. Yale has become a melting pot of culture, language and civilization. You are the global generation. So be global citizens.

你们都明白：耶鲁已经成为了文化、语言和文明的大熔炉。你们是全球性的一代。因此你们要成为世界公民。

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Whether you are returning to Istanbul for another ladleful of its melting pot culture or you are planning a much-anticipated first taste, this week's stories on Istanbul will tell you what you want to know to enjoy the city to its fullest.

BBC: This is Istanbul week

The humble dish of hummus represents, quite literally, the melting pot of Israeli culture.

BBC: Hunting for hummus in Israel

London's not only where political power is wielded, but it's where cultural power is focused too - as a melting pot of cultural ideas and identities and at the business end of culture, from publishing to West End theatre to the BBC London headquarters.

BBC: Is London good or bad for Scotland?