Reception or refusal of Song calendar manifiests Tangnt's recognition or denial of suzerainty of Song. It is a standard to judge the relation between Song and Tangut.
历法颁赐是治权实现的重要标志，接受或拒绝宋的颁历是西夏承认或否认宋统治权力及衡量宋夏关系的一个重要指标。
One being poor recognition another patient refusal, and probably also physician concern with the risks of open-heart surgery with aortic valve replacement.
另一个是病人拒绝，还有可能是医生太关注主动脉瓣置换的开胸风险。
One being poor recognition another patient refusal, and probably also physician concern with the risks of open-heart surgery with aortic valve replacement.
另一个是病人拒绝，还有可能是医生太关注主动脉瓣置换的开胸风险。
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