| 单词 | incidence |
| 释义 | incidence (once / 4478 pages) 1n 2n Incidence means the frequency with which something bad occurs. You’ll hear of “incidences of cancer” or “incidences of war." You hope the incidence is decreasing, not increasing. You might confuse incidence and incident. They sound similar, but incident refers only to something that happened, not to the frequency with which it happens. After a car accident, the police file an incident report, which is a fancy way of saying they write down what happened. Looking at these reports grouped together can show you if the incidence of accidents at specific intersections in town is on the rise. WORD FAMILYincidence: incidences+/incident: incidence, incidental, incidently, incidents/incidental: incidentally, incidentals USAGE EXAMPLESTherefore, “the incidence of Parkinson’s disease” in the study “appears to be lower than in the general U.S. population,” Syngenta says. New York Times(Dec 20, 2016) However, neuromuscular training changed that calculus, he continued, dropping the likely incidence of the injuries to about 1.5 percent of the athletes. New York Times(Mar 19, 2014) Transgender physicists reported the highest incidence of discrimination. Nature(Dec 18, 2016) 1 n the relative frequency of occurrence of something 2Syn|Hypo|Hyper relative incidence morbidity the relative incidence of a particular disease frequency, relative frequency the ratio of the number of observations in a statistical category to the total number of observations n the striking of a light beam on a surface he measured the angle of incidence of the reflected light Hyper optical phenomenon a physical phenomenon related to or involving light |
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