单词controllably
Now two groups have used such a system to bring light, in effect, to a complete halt and then controllably release it back on its way.
现在两个实验团队用这种系统可以将光约束到完全停止的地步，可是一旦释放，光又会恢复原有的样子。
Development of a Device with Controllably Tuning Bandwidth of Fiber Bragg Grating
光纤光栅带宽可控调谐装置的研制