It is found that three schemes make no difference to the calculations of the concentration of hydrocarbon, but some difference to those of other gaseous species.

研究结果表明：不同方案对有机烃类浓度的计算几乎没有影响，但对其它气态物浓度有一定的影响。

But the truth is that the symptoms not only make no difference to the duration of the cold, they can help spread the bug to other people - through nose blowing and coughing.

但是事实却是，症状不仅对感冒的持续时间没有影响，它们还会把病毒传染给别人——通过流涕和咳嗽。