Steradian(s).
1Senior (in names)
2Señor.
3Signor.
4Sister (in a religious order)
The chemical element strontium.
(in the UK) Southern Railway.
英汉双解词典包含464360条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。