That change in water temperature has lowered a physiological barrier that has kept the crabs in check.
水温的这一变化使控制蟹类的生理学屏障削弱了。
This article reviews the major compositions of gastrointestinal barrier and discusses its physiological mechanisms.
本文总结了胃肠屏障的组成，并探讨了其生理机制。
As a barrier, the normal flora in human intestinal tract protect the host from infection and other diseases and maintain the normal physiological function of human intestine.
像是一道屏障，保护宿主的健康，维持人体肠道正常生理功能。
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