The teacher was reluctant to single out individual students for praise or blame.教师不愿挑出个别学生来给予表扬或指责。He said it was wrong to single out any section of society for Aids testing.他说把社会中的任何一部分人抽选出来做艾滋病检查都是不对的。We wanted to single out the main threat to civilisation.我们想特别指出威胁文明的主要因素。