1. If a star is small, it collapses and remains collapsed, this is called a White Dwarf.
如果是小的，塌陷时就会留在塌缩状态，这就是白矮星。
2. Most scientists agree a Type1a supernova occurs when a white dwarf star a collapsed remnant of an elderly star exceeds its weight limit, becomes unstable and explodes.
大多数科学家认为，当白矮星（年老恒星坍缩而成的残骸）超过质量极限，变得不稳定并爆发的时候，会产生Ia型超新星。
1. The woman sued the Los Angeles Lakers star in August, three weeks before the criminal case against him collapsed in Eagle County.
2. A track star at school, the boy decided to run off his anger but collapsed after jogging about three hours.