B2 noun /wɜːrld ɪnˈvaɪrənmənt deɪ/
World Environment Day
世界環境デー
Meaning
An annual global event celebrated on June 5 to raise awareness about environmental protection and encourage action for environmental conservation.
Example
World Environment Day is celebrated every year on June 5.
世界環境デーは毎年6月5日に祝われます。