I wound up the watch and listened to it tick.我给表上紧发条，听着它嘀嗒作响。He nodded and puffed on a stubby pipe as he listened.他边听边点头，还吸着一支粗短的烟斗。She always listened earnestly as if this might help her to understand.她总是很认真地听，就好像这能帮助她弄...
Many aqueducts from ancient Roman times still stand today near the Mediterranean Sea.许多古罗马时代的引水渠至今还保留在地中海附近....a nationwide system of aqueducts to carry water to the arid parts of this country.将水输送到该国干旱地区的全国性导水系统Central ...