Sidereal
恒星的
Shun
Keep away from
Sidestep
Evade 回避
Signal
Distinguished from the ordinary
Simper
A silly smile
Simpleton
A person lacking in common sense
Simulation
An imitation
Sinecure
A position requires little work and provides an income
Sinew
活力
Singe
To burn superficially or lightly
Sinuous
Not direct
Siren
警笛
Skimp
吝啬
Skirmish
小冲突
Skirt
回避
Skit
滑稽短剧
Slack
Not tense , loose
Slab
A thick plate or slice
Slake
To satisfy
Slant
Conform to particular bias
Slate
A list of candidates
Slew
A large number
Sling
支撑用吊带
Slipshod
邋遢