constraint
- n. [数] 约束；局促，态度不自然；强制
英英释意
- 1. the state of being physically constrained;
- "dogs should be kept under restraint"
- 2. a device that retards something's motion;
- "the car did not have proper restraints fitted"
- 3. the act of constraining; the threat or use of force to control the thoughts or behavior of others