n. regression ; retreat ; recession
这是晚奥陶世晚期大规模海退的结果。
This was the result from the large-scale regression in the Late Ordovician.
这种图示方法既强调了海退性质也强调了同时性。
This method of portrayal emphasizes both the regressive nature and the time equivalence.
这种图示方法既强调了海退性质也强调了同时性。
This methodofportrayal emphasizes both the regressive nature and the time equivalence.
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