Stairstep
樓梯或階梯的一級(jí)，<俗>年齡與身高相差有規(guī)律的兄弟姐妹中的任何一個(gè); 梯級(jí)
??? 情景例句
Thanks. And what about your family?
謝謝。那你的家庭呢
Yes, this is Shen speaking.
是的，我姓沈。
As I expected, he did not believe me.'Try it!' I said encouragingly.
“你就聞一聞吧！”我催促說(shuō)。