动词锻炼得良好
1. 锻炼得良好：train ferry 火车轮渡 | train fine 锻炼得良好 | train off 转向
2. 锻炼处于良好状态：train down 减轻体重 | train fine 锻炼处于良好状态 | train it 乘火车(去)
1. For one, it will train Indian sailors in the fine art of operating nuclear submarines.
2. I think it's totally fine because I have nothing better to do during the long journey on the train.