propensity
n
~ (for/to/towards sth); ~ (for doing/to do sth) (fml 文) inclination or tendency 倾向; 习性
a propensity to exaggerate/towards exaggeration 浮夸的倾向
a propensity for getting into debt 借债的习性.
Shortly after this the famous H. M. S. Challenger expedition established the study of the sea-floor as a subject worthy of the most qualified physicists and geologists.