gradine：(台阶)梯级；梯级式一排座位；(神坛后的)壁架  

词根词缀： -grad-级 + -ine名词词尾

• survival
• survivalist
• survive
• survivor
• sus-
• susceptibility
• susceptible
• suspect
• suspend
• suspender
• suspense
• suspension
• suspicion
• suspicious
• suspire
• suss
• sussed
• sustain
• sustainable
• sustenance
• susurrant
• sutler
• sutra
• suture
• suzerain