单词	semigroup
释义	semigroup noun semi·​group ˈse-mē-ˌgrüp  ˈse-ˌmī-, -mi- : a mathematical set that is closed under an associative binary operation Word History First Known Use 1904, in the meaning defined above
随便看	alliterator allitic allium alliums allivalite allmouths allness allo- alloantibodies alloantibody alloantigen alloantigens allobar allobars Allobroges allocability allocable allocatable allocate allocated allocatee allocates allocating allocation allocations

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