crystal pulling

例句：

1. 1. The crystal was pulled out from the water with a strong current.
   从水中被一股强劲的水流拉出。
2. 2. The crystals were stretched to their full length in the sun's rays.
   在阳光下，晶体被拉伸到最长。
3. 3.The crystal was elongated due to its high purity and temperature.
   由于其高纯度和温度，晶体被拉长了。