In reference to the phenomena of color change of edible salt, this paper states the color-changing mechanism and the solutions, and details in the ionic testing method for color-changed salt.
针对食用盐变色的现象，阐述了食用盐变色的机理及解决的方法，详细讨论了涉及盐变色的离子检测方法。
Nowadays, change has become the theme of our age, and the society has changed or is changing at an alarming rate and manner.
变革已经成为当今时代的主题，社会已经或正在以惊人的速度和方式发生着变化。
Nowadays, change has become the theme of our age, and the society has changed or is changing at an alarming rate and manner.
变革已经成为当今时代的主题，社会已经或正在以惊人的速度和方式发生着变化。
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