短語詞組短語The Cambrian Geological Period 寒武紀(jì)地質(zhì)時期Pre -Cambrian period 前寒武紀(jì);先寒武紀(jì)前時代early Cambrian period 早寒武紀(jì)THE E CAMBRIAN PERIOD 寒武紀(jì)cambrian -ordovician period 寒武奧陶紀(jì)Middle Cambrian period 中寒武紀(jì)cambrian period limestone 寒武系灰?guī)rbasement of early cambrian period 前寒武紀(jì)基底the early period of Cambrian 寒武紀(jì)早期 返回 cambrian period