these lavas were coeval with the volcanic activity.
这些火山岩和那次火山活动是时期的。
these lavas were coeval with the volcanic activity.
这些火山岩和那次火山活动是时期的。
Sample: coeval with the dinosaur, the pterodactyl flourished during the Mesozoic era.
全等的:尺寸=时代的:时代(单位及关系)
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