And although psychedelic mushrooms are not known to be addictive, their effects canbe unpredictable and extremely unpleasant.

虽然我们还不清楚迷幻蘑菇是否会让人上瘾，但是它们的影响是不可预测的而且不容乐观的。

“Everybody has to use an alarm clock of some kind every day, and it's extremely unpleasant! ” he says.

“每个人每天都需要用某种形式的闹钟，它极其令人不愉快！”他说。

The show can be extremely unpleasant.

该节目可能非常不愉快。

It was an extremely unpleasant picture.

这是一幅极其不愉快的画面。

I once inhaled a bit of nitric oxide which, though initially extremely unpleasant, seemed to subside after a while.

我曾经吸入一点一氧化氮， 虽然最初非常不愉快， 但过了一会儿似乎就会消退。