维持一个硬或碱的水碳酸钙有的质量陷入造成比较少的腐蚀物浇水予甜胜于柔软或产生酸的水。
Maintaining a hard or alkaline water quality where calcium carbonate has a tendency to precipitate results in a less corrosive water than a soft or acidic water.
研究这种药草的农学家发现，它会产生大量的组氨酸，这种氨基酸在试管溶液中会使这些金属具有化学惰性。
Agronomists studying the herb have discovered that it produces large amounts of histidine, an amino acid that, in test-tube solutions, renders these metals chemically inert.
随后，这组科学家合成了这个区域的基因所产生的氨基酸序列——或者蛋白质，并在人类和猴子的免疫细胞中测试它们的效果。
They then synthesised the series of amino acids - or proteins - that the region of the genes produce, and tested their effects on human and monkey immune cells.
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