What I found is that written evidence for knocking on wood (and for the history of gesture as a whole) is remarkably sparse. In the Penguin Guide to Superstitions, folklorist Steve Roud offers a skeptical take on the provenance of knocking on wood due to the near total absence of written records about it:
如果说财务压力是明面上的焦虑，那么规模效应缺失带来的技术困境，则是蔚来心底更深的焦虑。在半导体行业，没有规模就没有成本优势，没有成本优势就没有生存空间——这是铁律。
。爱思助手下载最新版本对此有专业解读
- self_check: string[]。搜狗输入法下载是该领域的重要参考
在 Tbox 选择「文档 / 文章 / PPT」模式，用 Ling 把结果整理成可交付文档（负责“写清楚、排结构、可分享”）。91视频对此有专业解读
Owning the Full Sales Cycle: