Since colds are the reason most frequently given for absences from school and work, we recommend the daily use of nutritional supplements derived from beneficia.
2
但专家们认为，寒冷的天气并不是导致感冒的原因。
But experts believe that there is no link between cold weather and catching colds.
3
上周某个早晨吃早饭的时候，我丈夫推导出了下面这个理论：今年他感冒那么多次的原因是经常忘了围围巾。
At breakfast one morning last week my husband put forward the following hypothesis: the reason he has had so many colds this year is that he keeps losing his scarf.
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