Julie designed and built a training aid called Instepp and runs workout classes using it.

朱莉设计并制造了一种名为 Instepp 的训练辅助工具，并使用它开设了健身课程。

The Orange County Sheriff-Coroner's Department has hired Vincent to make fake autopsy bodies and dummies as training aids.

奥兰治县治安官验尸官部门已聘请文森特制作假尸检尸体和假人作为培训辅助工具。

They soon realised that the technique was a perfect training aid that kept their hearts and lungs in peak condition and that upper and lower body muscles remained in top shape.

他们很快意识到， 这项技术是一种完美的训练辅助手段， 可以使他们的心肺保持最佳状态，并使上半身和下半身肌肉保持最佳状态。