dog handlers短语⁹⁶⁶⁷⁷⁺⁶ 基本例句 警犬员 New dog handlers must learn the correct timing on when they give the actual mark during training. 初学训练的人必须要学会在训练中什么时候才是做标记的正确时机。 blog.sina.com.cn One reason for this is that the true dog handlers understand that they must be fair to their dogs. 其中一个重要的原因就是：一名真正的指导手非常清楚，他必须公正地对待他的每一条犬。 ttpet