He turned to the study and practice of medicine.他致力于医学的研究和实践。The actual practice of medicine can be very different from what students have learnt at university.实际的医学工作和学生们在大学里学习的内容可能会差别很大。After years of training, the doctor entered the practice of medicine.经过多年训练之后，那位医生开始行医了。