如果你不能安全地开采它,你根本不应该开采它。
If you can't mine it safely, you shouldn't mine it at all.
"We sleep safe in our beds because rough men stand ready in the night to visit violence on those who would do us harm."
使意念沉稳,任何事理都能通达;有志发愤图强,任何难事都能成功。
不要赔钱!!!客观地评估每个机会的风险。