We are making a thorough investigation...我们正在进行彻底调查。The President has ordered a full investigation...总统已经下令进行全面调查。There was concern in the city that police were making little headway in the investigation.警方在调查中未能取得什么进展，对...
从前他们在这些峡谷中采煤.At one time they used to mine coal in these valleys.从前用镐和铁锹采煤.Formerly the coal was dug with picks and spades.当大卫到达罗伯特和斯洛格跟前时,他们还在采煤.Robert and Slogger were still cutting coal when David reached them....