background,意为：背景,背景色.音标,／ˈbækˌɡraʊnd ／ 例句 The acetylation of histones plays very important role in expression of gene.
研究背景：组蛋白乙酰化修饰在基因表达调控中有非常重要的作用和意义.yearn /jɜːn/ yearning,yearned,yearns
If someone yearns for something that they are unlikely to get,they want it very much.渴望
例：
He yearned for freedom.
他曾渴望自由.desperate 不顾一切的；令人绝望的；极度渴望的 /ˈdɛspərɪt/ If you are desperate,you are in such a bad situation that you are willing to try anything to change it.不顾一切的
例：
Troops are needed to help get food into Kosovo where people are in desperate need.
需要军队协助将食物运进科索沃,那里的人们迫切需要食物. background,意为：背景,背景色.音标,／ˈbækˌɡraʊnd ／ 例句 The acetylation of histones plays very important role in expression of gene.
研究背景：组蛋白乙酰化修饰在基因表达调控中有非常重要的作用和意义.yearn /jɜːn/ yearning,yearned,yearns
If someone yearns for something that they are unlikely to get,they want it very much.渴望
例：
He yearned for freedom.
他曾渴望自由.desperate 不顾一切的；令人绝望的；极度渴望的 /ˈdɛspərɪt/ If you are desperate,you are in such a bad situation that you are willing to try anything to change it.不顾一切的
例：
Troops are needed to help get food into Kosovo where people are in desperate need.
需要军队协助将食物运进科索沃,那里的人们迫切需要食物.