To vie with each other in beauty and splendor; to contend for attention with their dazzling display (often used to describe flowers or beautiful objects).
春天来临，公园里的各种花卉争奇斗艳，吸引了许多游客驻足观赏。
With the arrival of spring, various flowers in the park were vying with each other in beauty and splendor, attracting many visitors to stop and admire them.
Next Idiom