(1)谷地，山谷 (stretch of lowland between ranges of mountains or hills)[C]：(town/city) nestle in a green～(城鎮(zhèn)/市)隱現(xiàn)在綠色山谷中; (sb) live in/(river) flow along a beautiful～(某人)居住在美麗的峽谷/(河流)沿美麗的峽谷流淌;The～expands into a wide plain/has a river running through it. 這條峽谷擴(kuò)展為一片廣闊平原/有河流從中穿過?！纪絙asin，hollow，bottoms，gap;〖反〗mountain，mount，peak，cliff，ridge，hill;
(2)流域(land area drained by a river system)[C， 通常sing]：the～of the river 河的流域;the Nile/Yangtse/Mississippi V～尼羅河/長(zhǎng)江/密西西比河流域;
【用法】?jī)蓚?cè)陡峭，既深又險(xiǎn)的山谷為ravine或gorge(深谷，峽谷，溝壑);又小又陡的山谷為gully(溪谷，沖溝);非常大的峽谷為canyon(大峽谷);ghyll為新興詞， 意思與ravine同。