underlie
verb [ T ] uk/ˌʌn.dəˈlaɪ/ us/ˌʌn.dɚˈlaɪ/ underlying | underlay | underlain
是…的深层原因；对…有重大影响
to be a hidden cause of or strong influence on something
Psychological problems very often underlie apparently physical disorders. 心理问题常常是明显生理疾病的深层原因。