文主题的更深入的感悟、对于主题词汇的切实掌握。
薄板连铸连轧工艺是钢铁工业的重大变革技术，要切实掌握和逐步推广。
The thin slab continuous casting and rolling process is a reforming technology in the steel industry, and it should be mastered and promoted step by step in China.
如果我带着真正的病症来看唐医生，他可能会在切实掌握我的情况后作出诊断。
Had I come to Dr. Tong with a real illness, he would have made a diagnosis after he felt he had a solid grasp on my condition.
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