Alternative telephone
A. you can choose to phone or not
B. Another number you can be contacted on other than your main number
C. A new telephone system
Duplicate
An exact copy of the original
B. To comfort somebody
C. Your twin
Guardian
A. Someone who guards your property
B. Someone whose favourite newspaper is the Guardian
C. A person who has legal custody of another person especially a child
Enclosed
A. To put something inside e.g. an envelope
B. To add more information
C. To be allowed to do something
微信支付 
支付宝支付