21.   Breast cancer occurs when cells that normally line the ducts through which a woman lactates begin a process of uncontrolled multiplication.

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%
cancer 0.13%
cancer + v. >>共 209
be 32.40%
spread 14.83%
return 4.61%
develop 2.47%
have 2.14%
recur 1.94%
go 1.80%
grow 1.74%
kill 1.67%
occur 1.40%
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