plastic explosive       
noun [ U ] uk/ˌplæs.tɪk ɪkˈspləʊ.sɪv/ us/ˌplæs.tɪk ɪkˈsploʊ.sɪv/
 塑性炸药
a soft explosive substance that is used to make bombs and can be easily formed into different shapes
  They used plastic explosive to blow up the bridge. 他们用塑性炸药炸那座桥梁。