1. (对他国力量的)遏制
Containment is the action or policy of keeping another country's power or area of control within acceptable limits or boundaries.

2. 控制;抑制
The containment of something dangerous or unpleasant is the act or process of keeping it under control within a particular area or place.

1. the act of containing
keeping something from spreading

e.g. the containment of the AIDS epidemic
the containment of the rebellion

2. (physics) a system designed to prevent the accidental release of radioactive material from a reactor

3. a policy of creating strategic alliances in order to check the expansion of a hostile power or ideology or to force it to negotiate peacefully

e.g. containment of communist expansion was a central principle of United States' foreign policy from 1947 to the 1975