polestar

• 名词，指小熊座中最亮的恒星，位于北斗七星斗柄末端，地球北极轴几乎正对它。也引申为指引方向的事物或目标。

A noun referring to the brightest star in the constellation Ursa Minor, located at the end of the handle of the Little Dipper, which the northern axis of the Earth points toward.

专有名词

1. The North StarB2formal

   The brightest star in the constellation Ursa Minor, located at the end of the handle of the Little Dipper; the northern axis of the Earth points toward it.

   北极星

   • Sailors have used the polestar for navigation for centuries.
   • The polestar remains fixed in the northern sky.
   • He looked up and found the polestar to determine his direction.

   同义词lodestarnorth starpolar starpolaris

2. Guiding principleC1formal

   A principle or person that serves as a guiding or central focus.

   指路明灯

   • Justice was the polestar of his political career.
   • Her moral compass was the polestar that guided her decisions.
   • The company's mission statement acts as a polestar for its employees.

   同义词beaconbenchmarkexemplarlodestarmodelstandardtouchstone