efflorescence
noun [ U ] uk/ˌef.ləˈres.əns/ us/ˌef.ləˈres.əns/
biology specialized开花;开花期
the period when flowers start to appear on a plant
literary（艺术等的）发展，繁荣;（尤指艺术等发展的）全盛期
the production of a lot of art, especially of a high quality