In our gastrointestinal tract, to alert our immune system if we swallow a dose of salmonella bacteria.
它们也会出现在消化道，只等我们吃进沙门氏菌时提醒免疫系统。
A model for the Lower Tertiary framework and sequence system tract of Jiyang subbasin was established with the high-resolution sequence stratigraphy.
建立了济阳坳陷下第三系高精度层序地层格架和层序体系域的构成模式。
During the basin fill, there is clearly a difference among the sedimentary system tract growth of each sequence.
这种序列性是盆地充填对地壳幕式伸展的沉积响应。
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