| ประโยคภาษาจีน : 中文句子 | 
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|  xiàn sù dù线速度  zài在  zhè ge这个  lì zi例子  lǐ里  jiù shì就是  sù lǜ速率  shì是  zhè ge这个  yuán huán圆环  de的  zhōu cháng周长  chú yǐ除以  zǒu走  yī一  juān圈  xū yào需要  de的  miǎo秒  shǔ数 | 
| And that linear velocity, which, in this case, is really your speed, is of course the circumference of the circle divided by how many seconds it takes to go around. |