obsolete
adj. 淘汰的，废弃的；（生物特征的一部分）退化的
vt. <美>淘汰（产品），废弃（想法）
第三人称单数 obsoletes
现在分词 obsoleting
过去式 obsoleted
过去分词 obsoleted
例句
With technological changes many traditional skills have become obsolete.
随着技术的革新，许多传统技艺已被淘汰。
《牛津词典》
The coal-fired steam engine was taking over, and the waterwheel was fast becoming obsolete.
烧煤的蒸汽机开始占领市场，于是水车很快就过时了。
The introduction of gunpowder gradually made the bow and arrow obsolete, particularly in Western Europe
火药的使用使弓箭逐渐被淘汰，特别是在西欧。
