There is understandable controversy about many aspects of these actions but they had the great advantages of speed and reversibility.
虽然对这些救市操作存在争议是合乎情理的，但是其迅速和可逆的优点不容忽视。
A root cause of the slowdown is housing, and so we continue to take actions that will avoid preventable foreclosures and speed a return to a healthy housing market.
经济下滑的根源是房产市场，所以我们继续采取措施，尽量避免可预防的房产没收，加速房产市场恢复健康。
The whole control system is digital integration, the speed of all kinds of protective actions is fast, the fault rate of the complete machine is low and the lifetime is long.
整个控制系统均为数字集成化，各种保护动作速度快，整机的故障率低，寿命长。
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