坑 坑的英文 英语翻译 delve; hole; pit; tunnelpits 拓展翻译 锯木坑sawpit掘坑hole坑厕latrine; pit privy坑道sap; tunnel坑道贫血tunnel anemia坑道支柱pitprop坑害entrap坑坑洼洼bumpy; rough坑口pithead坑木pitprop坑砂quarry sand坑水effluent矿坑气carburetted hydrogen垃圾坑cesspit