1. A commensal organism that lives on the outer body surface of another organism. 
   外共生体生活在另一种生物体外表的共生生物
2. Mouse out a scandal 
   打听出一件丑闻
3. A commensal organism, especially an insect that lives in the nest or burrow of another species. 
   寄生体，客虫一种同栖生物体，尤指生活在另一昆虫巢穴中的昆虫
4. large coarsely spiral bacteria; free-living in fresh or salt water or commensal in bodies of oysters. 
   大型质地粗糙的螺旋形细菌；自由生活与淡水或海水中，或者牡蛎体内的共生物。
5. The mouse scurried away. 
   老鼠急忙溜走了。

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