Aspiration, in which the food or drink goes down the trachea instead of the oesophagus.

吸入，食物或饮料送入气管而不是食。

Cancers of the oesophagus kill more than 500,000 people across the world each year.

全界每年有多于50万名患者因食。英国是第六大致命症。

Why this should have happened is not entirely clear, but one possible explanation is that sleeping on the left keeps the junction between the stomach and oesophagus above the level of the gastric acid.

为什么会发生这种情况并不完全清楚，但一个可能的解释是，左侧睡觉可以使胃和食之间的交界处保持胃酸水平之上。