中共十九大是于何时何地召开的？
When and where was the 19th National Congress of the Communist Party of China held?
静态类型还是动态类型，这取决于何时 实施类型模型。
Static versus dynamic typing depends on when a typing model is enforced.
我们由仅余两人时的局促不安察觉爱情于何时发生，何时减退。
We perceive when love begins and when it declines by our embarrassment when alone together.
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