常見例句

雙語例句

• Look at the billiard ball alone-- - forget the ping-pong ball-- and try to see that the speed of the billiard ball is practically unaffected by the collision.
  我們只看臺(tái)球-,完全忽略乒乓球-,來看看臺(tái)球的速度,它實(shí)際未受碰撞影響。
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