"sleek figures in expensive clothes"
"a streamlined convertible"
"glossy auburn hair"
"satiny gardenia petals"
"sleek black fur"
"silken eyelashes"
"silky skin"
"a silklike fabric"
"slick seals and otters"
Lal's sleek expensive car.
出自: M. Keane
Sleek o'er your rugged looks.
出自:Macbeth , Shakespeare