An explanation or statement that is plausible seems likely to be true or valid.
A more plausible explanation would seem to be that people are fed up with the administration.
一个更合理的解释似乎是人们已经对行政机关感到厌倦了。
If you say that someone is plausible, you mean that they seem to be telling the truth and to be sincere and honest.
All I can say is that he was so plausible it wasn't just me that he conned.
我只能说,他看上去那么可信,被骗的可不只我一个。