培养费的英文：
training expense

training是什么意思：
n. 训练；培训

the tail of a train
火车的尾部

explosive train
火药系

Is this dog trained?
这狗受过排便训练吗？

The train was in motion.
火车开动了。

This is a passenger train.
这是辆客运列车。

expense是什么意思：
n. 消费，开支；损失

duplicate expenses
使费用加倍

You will be reimburse for your expenses or your expenses will be reimburse.
你的花费将得到偿还。

All the expenses fall on me.
全部费用由我支付。

To enrich oneself at others expense
损人利己

It's handmade and hence expensive.
这是手工做的，因此很贵。