参照物 (cān) — reference object, frame of reference (the thing used as a basis for comparison or measurement)

Definition

Examples

• 判断物体是否运动，需要选择一个参照物。
  Pàn duàn wù tǐ shì fǒu yùn dòng, xū yào xuǎn zé yí gè cān.
  To judge whether an object is moving, you need to choose a reference object.
• 以地面为参照物，太阳是运动的。
  Yǐ dì miàn wèi cān, tài yáng shì yùn dòng de.
  With the ground as the reference object, the sun is moving.
• 这个实验需要一个固定的参照物。
  Zhè ge shí yàn xū yào yí gè gù dìng de cān.
  This experiment needs a fixed reference object.