But halitosis is now emerging as a fascinating scientific subject, involving an intimate human condition of widespread concern and traversing a wide range of scientific fields, including bacteriology, chemistry, physiology and psychology.

• 但现在口臭已成为一项令人著迷的科学研究主题，因为其中牵涉到大众会关心的切身健康问题，而且它还横跨许多不同的科学领域，包括细菌学、化学、生理学以及心理学。