a doctrinaire Marxist的用法和样例：
- That kind of person is anything but a Marxist.
- People admire somebody who projects himself as a practitioner and abominate anybody who projects himself as a doctrinaire.
- She always takes a Marxist line.
- She's a convinced Marxist, Buddhist, etc.
- The new vicar's a Marxist that'll set the cat among the pigeons!