单词	unnecessary
释义	un·nec·es·sar·y (ŭn-nĕsĭ-sĕr′ē) adj. Not necessary; needless. un·nec′es·sari·ly (-sârə-lē) adv.
随便看	Sistine sistrum Sisyphean Sisyphus sit Sita sitagliptin sitar sitarist sitatunga sitcom sit down sit-down site sith sit in sit-in Sitka Sitka spruce sitology sit on sit on hands sit on (one's) hands sit on one's hands sit on (or upon)

英语词典包含135693条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。