activating joint manipulation的用法和样例：
- Hamiltonian dynamics is active joint field of modern mathematics and physics.
- By properly aligning the body you reduce excess stress so that muscles and ligaments are strengthened equally on both sides of the active joint.
- Some people can put back a twisted joint by careful manipulation.
- The delays put the whole schedule out of joint.
- Although psoriatic arthritis involves distal interphalangeal joints, usually active joints are red, warm, and tender.