patch collecting造句

• In the U . S ., the development of the National parks system and the growing popularity of vacationing saw a similar development of patch collecting.
• The publishing of reference books on law enforcement insignia over the past decade has made law enforcement patch collecting a popular way to preserve law enforcement history.
• Another patch collecting specialty is police agencies such as sheriff, police, highway patrol, marshal, constable, park rangers, law enforcement explorer scouts, or other law enforcement related personnel.