她的头发用发胶打理得非常光滑亮泽。

Her hair looked ___slick and shiny with the styling gel.

那个推销员用花言巧语说服顾客买了不需要的产品。

The salesman used ___slick talk to convince customers to buy unnecessary products.

这个团队的运作非常高效，项目总是按时完成。

The team's operation is so ___slick that projects are always completed on time.

雨后的人行道上有一层薄薄的油渍，走路要小心。

Watch your step on the sidewalk—there's a ___slick of oil after the rain.