feat: add campplus merge_thr (#2135)

Kun Lu

2024-10-15 db308e75357ae686f5103123f157a7f79887a103

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st    street
st    saint
dr    doctor
dr    drive
mt    mount
sr    senior
prof    professor
mt    mountain
sr    senior
jr    junior
vol    volume
rd    road
ave    avenue
approx    approximately