jiào guān / duì / xué yuán / ruǎn yìng jiān shī / zhōng yú / ràng / tā men / wán chéng / le / xùn liàn

教官对学员软硬兼施，终于让他们完成了训练。

The instructor used both persuasion and pressure on the trainees and finally got them to complete the training.