离子障（ion trapping）

A. education
B. profession
C. precious
D. suggestion

A．education
B．profession
C．precious
D．suggestion

A．procession
B．professor
C．mission
D．pressure

（　）.

A:procession B:professor C:mission D:pressure

（）.

A:education B:profession C:precious D:suggestion

A:procession B:professor C:mission D:pressure

decision

A: sugar B: season C: pleasure D: expression