A digger had carved out three trenches, each about 50 metres long and 1.5 metres deep.
挖掘机刨了3个大坑，每个约50米长、1.5米深。
A digger had be2en brought in to cut a path up the hill and carve out three trenches, each about 50 metres (160ft) long and more than 1.5 metres deep.
一台挖土机在山脚下了三个坑，每个坑有50米长1.5米深。
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