rift valley (graben)riftvalley（graben）地: the earth堑: moat; chasm型: mould; model谷: valley; ravine; gorge地堑: fault graben; fault trough; faulted trough; faultgraben; rift trough; rift valley; sunken block下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:地堑；型谷，即可在微信中查询翻译
