impl Database {
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Dora入行不久，却深知自己与“老虎”之间的差距。“她们有那个，（胸部）很大，我就不行，身材不好。她们一看到客人就抱过去，我都不会呀！”
Note: Capabilities use the same dot-syntax as package imports (Chapter 12), but they are backed by host-provided C functions, not Mog source code. The compiler knows the difference because capabilities are declared with requires/optional, not import.
■ 完成“十五五”经济社会发展目标任务，需要应对更加复杂的环境、解决更多深层次矛盾。江苏等经济大省处在改革开放前沿，要在研究新情况、解决新问题上下功夫、出经验