a significant or sudden development or discovery; an important achievement
一个重大的或突如其来的发展或发现；一个重要的成就 (yī gè zhòng dà de huò tū rú qí lái de fā zhǎn huò fā xiàn; yī gè zhòng yào de chéng jiù)
"The scientist made a major breakthrough in his research on cancer treatment."
"科学家在癌症治疗研究中取得了一个重大的bùruì kè sū。" (Kēxuéjiā zài áizhèng zhìliáo yánjiū zhōng qǔdéle yīgè zhòngdà de **bùruì kè sū**.)
to start working hard on something
Someone who starts using a new product before others.
to speak at length in an excited or annoyed way
to evoke strong emotions, usually sympathy or sadness, in an...
To make someone lose confidence or enthusiasm.
to fail completely or embarrassingly
