It is decorous to wear all one's decorations on an occasion like this.在这样的场合佩戴全部勋章是得体的。They go for decorous walks every day in parks with their nanny.他们每天都会和保姆到公园散步，表现得很有教养。We expect decorous behavior/conduct from our students.我们期望我们的学生举止/行为得体。His manner, as ever, was decorous.他和往常一样彬彬有礼。