sunspottedness

例句：

1. 1. The sunspots on thesky were a sign of an approaching storm.
   天空中的太阳斑点预示着一场即将到来的暴风雨。
2. 2. The scientist observed the sunspots and determined their location.
   科学家观察了太阳斑点，并确定了它们的位置。
3. 3. Thesunspots are believed to be causedby solar flares.
   太阳斑点被认为是由太阳耀斑引起的。