The police left no stone unturned to look for the child.警察千方百计地去寻找孩子.He said he would leave no stone unturned in the search for peace.他说他会尽一切努力去寻求和平。Don't leave a stone unturned. It's always something , to know...
They drilled through several layers of rock to reach the oil.他们钻透了几层岩石寻找石油。We had multiplication tables drilled into us at school.以前我们上学得反复背诵乘法表.The recruits drilled regularly.新兵们定时操练....