英语翻译The tools of his industry are so common and so cheap that they have almost ceased to have commercial value.
问题描述：
英语翻译
The tools of his industry are so common and so cheap that they have almost ceased to have commercial value.
答
行业的意思
答
行业
他这个行业用的工具非常普遍和便宜，以至于这些工具差不多没有商业价值了。
答
n.工业；产业（经济词汇）
他的产业的工具是如此的普通而廉价,几乎不具有商业价值.