I reached the cockpit and directed the extinguisher at the fire without effect.
我进入驾驶舱，把灭火器对准火焰喷射，但没有效果。
This is not to say that the procedure employed in studies of discriminative learning will be quite without effect.
这并不是说在判别学习的研究中所采用的方法将完全没有效果。
The rate then levels off, and additional radiant energy is without effect and the system is light saturated.
然后光合速率趋于稳定，再增加辐射能对光合速率没有影响，光合系统达到光饱和状态。
The rate then levels off, and additional radiant energy is without effect and the system is light saturated.
然后光合速率趋于稳定，再增加辐射能对光合速率没有影响，光合系统达到光饱和状态。
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