cryptic adj. 1.隱藏的,秘密的;神秘的;難解的。 2.【動物;動物學】(適于)隱藏的。 cryptic colouring 【動物;動物學】保護色。 a cryptic remark 有言外之意的話。 cryptic species 【生物學】同形種。
era n. 1.紀元;年代,時代。 2.【地質(zhì)學;地理學】代。 inaugurate [mark] a new era 開[劃]新紀元。 before [in] the Christian era 公元前[后]。 ERA, E.R.A. = 1.Emergency Relief Administration 〔美舊〕緊急救濟署。 2.engine-room artifier 【航?!繖C艙機電軍士。
The Cryptic era is an informal term that refers to the earliest geologic evolution of the Earth and Moon. It is the oldest (informal) era of the Hadean eon, and it is commonly accepted to have begun close to 4567.