新兵们都很敬畏那位坚持每个指令都必须完美执行的严格教官。

The new recruits respected the strict ___drillmaster who insisted on flawless execution of every command.

那位严厉的游泳教练是个真正的训练狂，每天让我们重复练习基本动作直到完全正确。

The strict swimming coach was a real ___drillmaster, making us repeat basic strokes until we got them perfectly right every day.