Of course, that doesn't control the cost of education! It just shifts it to taxpayers.
当然,这并不能控制教育成本!它只是将其转移给了纳税人。
2
The advantage of biological control in contrast to other methods is that it provides a relatively low-cost, perpetual control system with a minimum of detrimental side-effects.
与其他方法相比,生物防治的优点是它提供了一种成本相对较低、有害副作用最小的永久性防治系统。
3
They will try to controlcost. You have to be on your own.