A massive rock fall trapped the men as they operated a tunnelling machine.
那些男人在驾驶隧道掘进机时，一次大面积的岩崩困住了他们。
This machine is made to crush the rock into power.
这台机器是用来把石头压成碎末的。
This machine grinds out the crushed rock ready for road building.
这台机器碾碎用来筑路的石头。
This machine crushes the rock up so that it can be used for road building.
这台机器能粉碎石头，可用来筑路。
This machine is used to crush the rock up for road building.
这台机器能粉碎石头，可用来筑路。
This machine is made to crush the rock into powder.
这台机器是用来把石头压成碎末的。
This machine is made to crush the rock into powder.
这台机器是用来把石头压成碎末的。
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