凯斯勒补充说，相比于其它的自我恢复型材料，这种复合物也有两大缺点：要在受压情况下操作，过程要数小时。
Kessler adds, however, that the new material suffers from two of the main drawbacks faced by other self-healing materials: it requires pressure, and the repair process takes hours.
作为集团四大业务领域之一，凯米拉水处理主要致力于水处理化学品业务。
Kemira water is the name of the business area of the group, mainly engaged in water treatment chemicals business.
凯利一个小巫婆就读于巫婆学院，被分配到不同的收集元素超过数千大跌骰子成为一名合格的巫婆。
Kelly, a little witch studying at witch College, was being assigned to collect different elements over thousands of tumbling dice to become a qualified witch.
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