assist : as (如同) + sist(er) 姊妹
→如同姊妹一樣幫助你

assist v.幫助 ( help ) ；出席, 參加 ( in, at )
【例】assist at a graduation ceremony 參加畢業典禮
Her breathing was assisted by a respirator. 她要靠呼吸器幫助呼吸
【參】persistence ( n.堅持 ) ；resistance ( n.抵抗 )

【記】as朝向，sist站立→站在你一邊→幫助