The city was walled and built upon a rock.这座城市建在岩石上，四周筑有城墙。The side alley was walled off from the back garden.侧巷和后花园之间用墙隔开了。Donkeys outnumber cars in this landscape of tiny stone-walled fields.在这片以石墙隔出巴掌大的农田的乡村，驴子比汽车还多。...
The boy had the presence of mind to turn off the gas.那男孩子镇定地关掉了煤气。He had the presence of mind to put his emergency oxygen tube in his mouth.他镇定自若地把应急输氧管放进了自己的嘴里。I had much presence of mind to bring myself off.我十分镇静地逃了出来....