“伴生礦產”簡單造句，伴生礦產造句子

1、如，外商開採主礦種以外的共、伴生礦產資源的，減半繳納礦產資源補償費；

2、Content Abstract: Arnold and his sister Rose give two bullying classmates a taste of their own medicine when Arnold decides he doesn't have to be a wimp anymore.