| 释义 |
years ago adverb—年前 adv (almost always used)Examples:Cambrian (geological period 545-495m years ago)—Jurassic (geological period 205-140m years ago)—Archaean (geological eon before 2500m years ago)—Oligocene (geological epoch from 34m-24m years ago)—tertiary (geological era since the extinction of the dinosaurs at the Cretaceous-Tertiary boundary 65 million years ago)—five hundred years ago we were the same family (idiom) (said of persons with the same surname)—Ordovician (geological period 495-440m years ago)—pre-Cambrian, geological period before c. 540m years ago—Palaeocene (geological epoch from 65m-55m years ago)—lower Cambrian series (geological strata from approx 530 million years ago)—Miocene (geological epoch from 24m-5m years ago)—Carboniferous (geological period 354-292m years ago)—Proterozoic (geological era 2500-540m years ago)—Cretaceous (geological period 140-65m years ago)—Devonian (geological period 417-354m years ago)—Pliocene (geological epoch from 5m-2m years ago)—lower Cambrian (geological period approx 530 million years ago)—Ediacaran period (c. 635-542 million years ago), late phase of pre-Cambrian geological era—Archaeozoic (geological era before 2500m years ago)—Sinian (c. 800-542 million years ago), late phase of pre-Cambrian geological era—Silurian (geological period 440-417m years ago)—Pleistocene (geological epoch from 2m years ago, covering the most recent ice ages)—Cambrian geological period (545-495m years ago)—Permian (geological period 292-250m years ago)—Eocene (geological epoch from 55m-34m years ago)—Triassic (geological period 250-205m years ago)—Ediacaran (c. 635-542 million years ago), late phase of pre-Cambrian geological era—a few (days, years etc) ago— |