AnalyzerSentence analysis2SpansSentence密閉回路1000 character limitAnalyzeSentence密みっ閉ぺい回かい路ろSpan Details密みっ閉ぺいseal tightly; make airtight; hermetically sealnoun, suru verb回かい路ろelectrical circuit; electronic circuit; biological cycle; metabolic cycle; loop; cycle; closed pathnoun