act as pallbearer的用法和样例：
- As she stood there, one of the soldiers who acted as pallbearer came up to her.
- The teacher was the last one to bless the coffin.As she stood there, one of the soldiers who acted as pallbearer came up to her."Were you Mark's math teacher?
- The forest will act as a defense against desert dust.
- We must appoint sb to act as secretary.
- He was appointed to act as the executor.
- Maybe I can act as a messenger for you.