In the process of aging no significant changes were discovered considering the content of total amino acid and free amino acid in the water-extracted substance of broad bean sauce.

豆瓣酱后熟过程中其水提取物中氨基酸总量、游离氨基酸的量没有特别明显的变化。

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A groundwater reservoir from which water can be extracted is called an aquifer.

可以从中抽取水的地下蓄水层被称为含水层。

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Previous drilling of wells could only reach depths of 1,000 feet, but due to new pumping practices, water deeper than this can now be extracted.

以前钻井深度只能达到1000英尺，但由于有了新的抽水方法，现在可以抽取比这更深的水。

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