n.不愉快；不快之事
You ought to be prepared for some unpleasantness. 你要做好思想准备，可能发生一些不愉快的情况。
I want to avoid any unpleasantness with the neighbours. 我要避免与邻居有任何不快。
I had a slight unpleasantness with the manager. 我和经理之间有过一点磨擦。
