These movements are controlled by the trainer with the metal-pointed stick.

训练员要用有锋利金属尖的长棒控制它的这种举动。

youdao

Each swimmer was then asked to swim at 10% below their natural stroke rate and 20% below it, controlled by a Tempo Trainer beeping the timing to them.

每个游泳者然后被要求在自然划频的10%以及20%以下游泳。节奏训练器会发出蜂鸣声来给他信号。

youdao

One of the four drugs used on this horse was a common form phenylbutazone that you probably recognize as as a Non-steroidal anti-inflammatory drug used for pain management in horses as ubiquitously used only through veterinarian controlled pharmaceutical sale to horse owner or trainer.

FORBES: Ann Romney Loves Me Not