something that is slippery is difficult to hold, walk on etc because it is wet or GREASY
〔因湿或有油脂而〕滑的，滑溜的:
【例句】
In places, the path can be wet and slippery.
路上有些地方可能又湿又滑。
【例句】
Harry's palms were slippery with sweat.
哈里手心冒汗，滑溜溜的。
2.
【释义】
[informal] someone who is slippery cannot be trusted
滑头的，不可信赖的:
【例句】
Martin is a slippery customer (=someone you should not trust) so be careful what you say to him.
马丁是个滑头，所以和他说话要多留神。
3.
【释义】
not having one clear meaning and able to be understood in different ways
模棱两可的，模糊的:
【例句】
the slippery notion of 'standards'
“标准”一词的模糊概念
4.
【释义】
(be on) a / the slippery slope, [BrE informal] used to talk about a process or habit that is difficult to stop and which will develop into something extremely bad
