cause sth not clear 模糊

cause sth to become coarse 使某物变粗糙

helping to cause sth 促成某事物的 ; 有助于某事物的

cause sth to do 导致

to cause sth to relax 舒缓

cause sth to end 使终止

cause sth to sb 对某人引起

help to cause sth 为某事物作准备

cause sth to happen 使发生