n. 英文字母表的第19个字母
Why is a sea horse shaped like an "S"?
海马的形状为什么像一个“S”?
"S" is that you can have the "scheduling".
“S”意味着你可以拥有“日程安排”。
The last letter is "S" again, which means "smile".
最后一个字母又是 S,意思是“微笑”。
There are many species of dog(s).
狗有许多种。
She´s living in hall(s).
她住在学生宿舍。