obverse

硬币的正面印有国王的头像。

The ___obverse of the coin features the king's portrait.

硬币的正面印有国家领导人的头像。

The ___obverse of the coin shows the national leader's portrait.

这个理论看似合理，但其反面也有同样有力的证据支持。

The theory seems plausible, but the ___obverse is equally well-supported by evidence.