通婚,近親結婚
Intermarry \In`ter*mar"ry\, v. i.
To become connected by marriage between their members; to
give and take mutually in marriage; -- said of families,
ranks, castes, etc.
About the middle of the fourth century from the
building of Rome, it was declared lawful for nobles and
plebeians to intermarry. --Swift.
intermarry
v : marry within the same ethnic, social, or family group
[also: {intermarried}]