And each cloud is compacted, gravity gets more powerful as density increases, the temperature begins to rise at the center of each cloud, and then, at the center, the temperature crosses the threshold temperature of 10 million degrees, protons start to fuse, there's a huge release of energy, and -- bam!
每片云都是紧凑的， 重力场就随着密度的增加而效果更加明显， 在每片云的中心温度开始升高， 而且在每片云的中心， 温度超过了阈温度 之上一千万度， 质子开始融合， 这释放出大量的能量， 接着，轰！