bitterness
n. 苦味；苦难；怨恨
例句
But underneath the humour is an edge of bitterness.
在幽默的背后却是一种怨恨的尖刻。
《柯林斯英汉双解大词典》
The bitterness and tears had congealed into hatred.
苦难与眼泪凝结成了仇恨。
《牛津词典》
The flowers of the hop plant add bitterness to the beer.
忽布花可增加啤酒的苦味。
