a pseudoscientific forerunner of chemistry in medieval times
primitive forerunner of the vertebrates
be a forerunner of or occur earlier than
tell in advance v be excited or anxious about v be a forerunner of or occur earlier than
precursor, a forerunner
forerunners
n. 先驱( forerunner的复数形式 ); 开路人; 先兆; 前兆
