update readme, for step1-optional

huangmingming

2023-01-30 32c5b3cafb4917dbfcae4f6f7d8c4d12a4f6eef4

1
2
3
4
5
6
7
8
9
10
11
12
13
14
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