(1) Linguists and language teachers often take account of the frequency of occurrence of linguistic items and features.

(2) They also reduced the occurrence of life-threatening cardiac events.

(3) The sound of five harps playing in ensemble must be a rare occurrence in the concert world.

(4) Career crisis is no longer a rare occurrence for Shanghainese in a society dominated by a market economy.

(5) I selected the species for analysis based on their frequency of occurrence in Massachusetts.

(6) So I get thinking, this is an abnormally high occurrence of cancer in a control group of youths.

(7) It's a fairly frequent occurrence that I'm the first into our office.

(8) The phenotypic adaptation in our study may help explain their frequent occurrence .

(9) The occurrence of cancer increases with age

(10) Chance occurrence of an event is one in which no cause can be identified explaining its teleological or purposeful specificity.

(11) There's about a ten-year gap in terms of the occurrence and incidents of the disease.

(12) For the overstory, frequency of occurrence of a species was expressed as present or absent.

(13) This may contribute to the more frequent occurrence of severe epidemics there than in other countries.

(14) As Justine's visions become a more frequent occurrence , Dawn admits acting out those powerful scenes can be quite a challenge.

(15) The operator confirms or discards the occurrence of a traffic incident based on the video screen review.

(16) Here, we shall confine our attention to discussing the conditions which must be satisfied if their occurrence is to be compulsory.

(17) These biozones are commonly of restricted or local occurrence .

(18) Vandalism used to be a rare occurrence

(19) However, many boys refuse because of the frequent occurrence of infection afterward.

(20) The frequency of occurrence of conduits within different area classes decreases with increasing area.