Trying to track everything is wasteful, especially if the lion's share of profits comes from lines that make up a minority of overall production.
试图跟踪所有的信息是很浪费的，尤其当最多的利润来自小部分产品时。
The silicon production is absolutely non wasteful.
硅的生产是绝对不会亏本的！
Lijiagou mine severely damaged by unauthorized and wasteful mining, Mining-out area large stope collapse frequently, great impact on mine production and safety.
李家沟矿区受民采破坏严重，空区众多，采场塌陷频繁，对矿山生产和安全影响极大。
Lijiagou mine severely damaged by unauthorized and wasteful mining, Mining-out area large stope collapse frequently, great impact on mine production and safety.
李家沟矿区受民采破坏严重，空区众多，采场塌陷频繁，对矿山生产和安全影响极大。
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