cave-ins

• Right . - . . and in case of cave - ins
  对啊- . .用来防止陷落
• Right . - . . . and in case of cave - ins
  对啊-用来防止挖空
• - right . - and in case of cave - ins
  -对啊-用来防止挖空
• - right . - and in case of cave - ins
  -对啊-用来防止挖空
• He had his leg injured trying to save a comrade from a cave - in
  在遇到塌方时,他为了救同志,自己的腿受了伤。
• There has been no communication with the miners since a cave - in on monday
  自从周一矿工因塌方而被困后一直杳无音讯。
• There has been no communication with the minners since the cave - in on monday
  从周一的矿脉塌陷至今未有与被困矿工的任何联络。
• The move comes after three rescue workers were killed during a cave - in thursday night
  原因是周三晚的一次塌方造成了3名搜救人员不幸身亡。
• Floods , fires , cave - ins , and other calamities killed nearly five - thousand miners last year
  透水火灾塌陷以及其他事故去年造成近5000人丧生。
• The move comes after three rescue workers were killed during a cave - in thursday night
  这一决定是在三名救援人员于周四晚于井下不幸遇难后做出的。