当代精神病学先后经历了两次方法危机。
The psychiatry of contemporary has involved two crisis of method.
火山岩先后经历了冷却成岩和次生成岩两个成岩阶段。
The volcanic reservoir experienced two phases of cooling diagenesis and secondary diagenesis.
人类社会已先后经历了农业文明、工业文明两次文明形态。
Human society has gone through two forms of civilization, which are agricultural civilization and industrial civilization.
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