(also informal slippy) difficult to hold or to stand or move on, because it is smooth, wet or polished 滑的；滑得抓不住（或站不稳、难以行走）的
slippery like a fish
滑得像条鱼似的
In places the path can be wet and slippery.
这条小径有些路段又湿又滑。
His hand was slippery with sweat.
他的手汗津津的。