bitter

The medicine had such a bitter taste that the child refused to swallow it without juice.

(Chinese) 这药的味道太苦了，孩子拒绝在没有果汁的情况下吞下去。

Dark chocolate with 90% cocoa is often too bitter for people who prefer milk chocolate.

(Chinese) 对于喜欢牛奶巧克力的人来说，90%可可含量的黑巧克力通常太苦了。

Years after the divorce, he still felt bitter about how his ex-wife had treated him.

(Chinese) 离婚多年后，他仍对他前妻对待他的方式感到愤愤不平。

The long legal dispute ended in a bitter rivalry between the two former business partners.

(Chinese) 长期的法律纠纷以两位前商业伙伴之间愤恨的竞争而告终。