World Environment Day短语⁹⁶⁶⁷⁷⁺⁶ 基本例句 世界环境日 环境 So the UN celebratesWorld Environment Day.所以联合国才确立了世界环境日。 Global warming is melting glaciers fast enough to justify making them the theme of this year'sWorld Environment Day.全球气候变暖导致冰川迅速消融，甚至快速到使它成为今年世界环境日的主题。