billion-degree

基本解释

When the core temperature of the star reaches 1.3 billion degrees neon reacts to form oxygen.
当恒星的核心温度达到13亿摄氏度的时候，氖就会通过化学反应变成氧。
But those positrons are emitted with 550 kilo-electron volts of energy, equivalent to a temperature of six billion degrees Celsius.
不过这些正子的能量为55万电子伏特，相当于60亿℃的高温。
Each of the components is useful in its degree.
每一个元件都各有程度不同的用处。
The solar system was formed 4.5 billion years ago.
太阳系是四十五亿年前形成的。
U.S. investments here topped one billion dollars.
美国在这里的投资超过了十亿美元。