单词：digestive system
digestive system的用法和样例：
例句
- We studied the action of the digestive system.我们学习了消化系统的作用。
- She suffered from digestive trouble.她患有消化系统疾病。
- gastrointestinal system胃肠系统,肠胃系统...
- systema digestorium消化系统
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