Old English snel "quick, active," cognate with Old Saxon, Dutch, Old High German snel, German schnell "swift, quick," Old Danish snel "swift, fleet," Old Norse snjallr "eloquent, able, bold." It survived as a surname and in Scottish and northern English; used by Burns and Scott. Italian snello is from Germanic.
实用例句
1. Realized the curving ray tracing method based on the Snell law.