extrinsic
adjective formal uk/ekˈstrɪn.zɪk/ us/ekˈstrɪn.zɪk/
(FROM OUTSIDE)
外在的，外来的;非固有的，非本质的
coming from outside, or not related to something
Extrinsic forces were responsible for the breakdown of the peace talks. 和谈破裂，外部压力难辞其咎。
medical specialized（身体）外部的，外源的
coming from outside the body
Eczema can have extrinsic causes. 湿疹可能由外部因素引起。
(MUSCLE)
medical specialized外在肌，外附肌
Extrinsic muscles are some distance from the body part they move.
The extrinsic eye muscles are six muscles external to the eye which control the way the eye moves. 眼外在肌是眼球外部的六块肌肉，控制眼球的运动。