It takes twice as much effort to breathe during sleep because of greater resistance to airflow in the airways and changes in the efficiency of the muscles used for breathing.
2
“在我眼中,一道摆盘精致的菜的档次提高了一倍。”他后来在一本烹饪书中写道。
"A well-displayed meal is enhanced one hundred percent in my eyes," he later wrote in one of his cook books.
3
分析表明,骑自行车者下呼吸道细胞中的煤烟含量要高出2.3倍。
The analysis found that cyclists had 2.3 times more soot in their airway cells.