消化系统包括食道、胃、小肠、大肠和肝脏、胆道、胰脏
The digestive system including esophagus, stomach, small intestine, large intestine and liver, biliary tract, pancreas ...These words can be analyzed with an exquisite, brand new  point in my book "解密英漢字" and remembered much easier.
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Also a webpage w/ sound
http://quizlet.com/8382401/science-digestive-system-wordsdefinitions-flash-cards/