Examples include the movement of the sun across the sky, a pendulum or vibrating crystal, or, in an atomic clock, the natural vibrations of atoms.是什么意思_Examples include the movement of the sun across the sky, a pendulum or vibrating crystal, or, in an atomic clock, the natural vibrations of atoms.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句