Delta ,Delta Plus ,这是要出一个系列的节奏吗？
Delta Plus已经显示出更强的传播能力
Delta Plus已经显示出更强的传播能力
NY Times
In India, concern mounts over a variant called Delta Plus.
The version of the virus has been found in several other countries, too. Officials say that they are gathering data about its strength and emphasize that vaccines are likely to still offer protection.