We now know that sneezing is a reflex action and is most often the sign of something relatively benign, such as a cold or allergy. 我们现在都知道,打喷嚏只是一种反射行为。通常来说,它可能是某种不怎么严重的疾病征兆,例如感冒或过敏。
Sneezing is a reflex, which means that it's an uncontrollable physical response to an outside stimulus. 打喷嚏是反射,也说它是生理对外界环境的反应,不可控制。