Ratings & Reviews performance provides an overview of what users think of your app. Here are the key metrics to help you identify how your app is rated by users and how successful is your review management strategy.
4.0钢琴曲不但可以让猛兽安静下来，对人类有更多的益处，钢琴曲可以提高空间推理能力强可提高思考逻辑能力及解决问题的能力。学钢琴可以让人思考更清晰，更容易专心，生活的其他面向也能处理的更好，并可有效疏解各种压力，使人身体更健康。
