几个句子结构及理解

junarry

1. Scientists have observed large concentrations of heavy-metal deposits in the upper twenty centimeters of  （sediments from the Baltic Sea）, consistent with the growth of industrial activity there。
括号里的意思是“海里的沉积物”吗，为什么用from,而不用the Baltic Sea sediments

2.In the minds of many people living in England,（ before Australia was Australia,） it was the antipodes, the opposite pole to civilization, an obscure and unimaginable place that was considered the end of the world.
夸号里的如何理解
3.The first decision for most tenants living in a building undergoing  conversion to cooperative ownership is whether to sign  a no-buy pledge with the other tenants.中的no-buy是什么意思

4.In addition to having more protein than wheat does, the protein in rice is higher quality than that in wheat, with more of the amino acids essential to the human diet.
the protein in rice is higher quality than that in
选rice has protein of higher quality than that in
the protein in rice is higher in quality than it is in
rice protein is higher in quality than it is in
rice has a protein higher in quality than

In C and D, the comparative structure higher in quality than it is in wheat absurdly suggests that rice protein contains wheat.这句解释如何理解

junarry

4.按你的解释我明白了，可OG的解释是In C and D, the comparative structure higher in quality than it is in wheat absurdly suggests that rice protein contains wheat.
rice protein contains wheat.  是大米蛋白包含小麦吗？还是小麦包含大米蛋白？

junarry

1.sediments from the Baltic Sea 中的from 是从...而来的意思吗，这样翻译有点别扭。

junarry

对第四题我还有疑问

4.按tongxun的解释我理解了，可OG的解释是In C and D, the comparative structure higher in quality than it is in wheat absurdly suggests that rice protein contains wheat.
rice protein contains wheat. 是大米蛋白包含小麦吗？还是小麦包含大米蛋白？