forerunners
n. 先驱（forerunner 的复数）；前震
例句
Country music was undoubtedly one of the forerunners of rock and roll.
乡村音乐无疑是摇滚乐的先导之一。
《牛津词典》
The Tories were the forerunners of the Conservative Party.
托利党是保守党的前身。
Muybridge's motion studies can be fairly credited as the forerunners of the cinema.
麦布里奇的动作研究可公认为电影的先驱。
