zài / tǎolùn / zōngjiàoshǐ / shí / lǎoshī / jiěshì / le / jiàohuì / wèihé / huì / bǎ / yìduān / géchūjiàomén在讨论宗教史时,老师解释了教会为何会把异端革出教门。During a discussion of religious history, the teacher explained why churches would excommunicate heretics.