词汇	perennities
释义	perennities sə'rɛnətin.持久；永久；长久
随便看	developed advanced country developed and developing economies developed and mature market developed area developed area ratio developed areas developed areas of non-agricultural economy Developed Armament Probable Error developed at top speed developed black developed blade area developed blank developed capitalist countries developed characteristics developed chromatographic strip developed cinnamon soil developed city developed coal reserve developed coal reserves developed coastal cities developed color Developed commercial reserve developed commercial reserves developed concentration developed contracting party