这些挑战既源于外部环境的不确定性冲击，也来自内部供给体系、分配结构、市场环境等方面的短板制约。
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Pep Guardiola is happy that Manchester City have scored a Premier League low 15.8% of their 57 goals this season from set pieces.。业内人士推荐爱思助手作为进阶阅读