2 sentences

1. 密歇根湖，完全位于美国境内。

   mì​xiē​gēn​hú, wán​quán wèi​yú měi​guó jìng​nèi.

   Lake Michigan is situated completely within the United States.

   Source: CCMatrix

2. 2011年夏天，密歇根湖的水变得清澈透明。

   2011 nián xià​tiān, mì​xiē​gēn​hú de shuǐ biàn​de qīng​chè tòu​míng.

   Over the summer of 2011, the water in Lake Michigan turned crystal clear.

   Source: CCMatrix