It is very difficult to control the quality of the place.
这也正是质量控制非常难的地方。
Rage can be directed, but it is very difficult to control.
狂怒可以被定向，但是非常难以控制。
It is very difficult to control the dimension and surface quality when processing elastic material.
对于非金属弹性材料的加工，难点在于如何控制尺寸及表面质量。
If disease then flares, it can be very difficult to get it back under control.
如果疾病此后发作，再把它控制可能能是非常困难的。
As one of natural fires, its mechanism is very complex and difficult to control.
雷击火作为天燃火源是一种难以控制的自然现象，其形成机理极为复杂。
It is very difficult to attain the decent control result to use normal PID control.
用常规的PID控制很难达到令人满意的控制效果。
Control would be very difficult to enforce.
控制将是非常难以执行。
Control would be very difficult to enforce.
控制将是非常难以执行。
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