weak-lined star

例句：

1. 1.The weak-line star is a crucial part of the navigation system.
   弱线星是导航系统的关键部分。
2. 2. The weak-line star was used to help guide ships through the fog.
   弱线星用于帮助船只在雾中航行。
3. 3. The weak-line star has been identified as a potential source of energy for future space exploration.
   弱线星被识别为未来太空探索的潜在能源来源。