正在改变与想要改变世界的人，都在 虎嗅APP
The sun is a giant nuclear fusion reactor, converting hydrogen into helium and releasing massive amounts of energy in the form of heat – and sound. Sound is essentially vibration and needs a medium to travel through.
。关于这个话题，51吃瓜提供了深入分析
Like the N-convex algorithm, this algorithm attempts to find a set of candidates whose centroid is close to . The key difference is that instead of taking unique candidates, we allow candidates to populate the set multiple times. The result is that the weight of each candidate is simply given by its frequency in the list, which we can then index by random selection:
杜耀豪有一个大他七岁、感情甚笃的姐姐，姐姐两岁便来到德国，比他更早融入这片土地。而母亲，那个总在提醒他“记住根”的女人，1981年到德国后，在鱼店工作了整整三十年。