these lavas were coeval with the volcanic activity.
这些火山岩和那次火山活动是
期
。
代代人these lavas were coeval with the volcanic activity.
这些火山岩和那次火山活动是期。
Sample: coeval with the dinosaur, the pterodactyl flourished during the Mesozoic era.
全等:尺寸=代:代（单位及其相关系）
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