But the damage to skill and craftsmanship- that's needed to build a complex airliner or a tractor, or for a worker to move up from assembler to machinist to supervisor - went largely unnoticed.
出自-2013年6月阅读原文
柯林斯高阶英汉双解学习词典释义
ADJ
未被看见的；未引起注意的；被忽视的
If something happens or passes unnoticed, it is not seen or noticed by anyone.