Strains: A twist, pull, or tear of a muscle or tendon from overstretching or overcontraction.Symptoms include pain, loss of strength, and muscle spasms.

• 拉伤：由于过度拉伸或收缩而造成的肌肉或腱的扭伤，拉伤或撕裂，症状包括疼痛无力，肌肉痉挛。