词族 · azoic
词形变化
英语词源
- azoic (adj.)
- "pertaining to the period of Earth's history before life appeared," 1854, with -ic + Greek azoos, from a- "not, without" (see a- (3)) + zoon "animal," here used in the sense "life" (see zoo).
权威例句
- 1. Marine life was discovered at depths previously thought to be azoic.
- 在先前被认为没有任何生命迹象的海洋深处发现了海洋生物。
- 2. Azoic rocks don't contain organic remains.
- 无生代岩石中不包含有机残余物.