11.   A basilar skull fracture occurs when the head whips forward violently, essentially separating the base of the skull from the spinal cord.

12.   But today, tooth fractures occur even among toddlers.

n. + occur >>共 919
incident 6.74%
accident 6.06%
attack 4.78%
explosion 4.08%
blast 2.84%
death 2.35%
shooting 2.24%
problem 1.82%
crash 1.75%
injury 1.56%
fracture 0.08%
fracture + v. >>共 37
be 45.52%
occur 8.96%
heal 5.22%
take 3.73%
begin 2.99%
lead 2.24%
prove 2.24%
run 2.24%
hasten 1.49%
care 1.49%
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