essential---n.本质;要点;要素;必不可少的东西 adj.必要的;必不可少的;本质的;基本的
"I think that, for majority of scientific papers nowadays, statiatical review is more essential than expert review," he says.
core---n.果心;核儿;(问题的)核心;要点;主要业务;主要活动 v.去掉....的果心;给(水果)去核
In America, the core scientific publishing market is estimated(估计) at between $7billion and $11 billion.
head---n.头，头顶;头部;头脑;首脑，首长;(公司、组织的)负责人;领导人;头脑;才智 v.率领;站在....前头;前进;用头撞;顶(球)
It was a year before she became head of a tiny Internet-based commodities exchange(商品交易所).
headache----n.头痛;麻烦;令人头疼的事
go-ahead---n.前进，进步;许可，批准
headline---n.(尤指报纸头版的)标题;大字标题;新闻提要
headway---n.前进;进步;航行速度;间隔时间
If humanity has made some headway in realizing that ultimate(最终的) value of every institution is its distinctively human effect, we may well believe that this lesson has been learned largely through dealings with the young.
headlong---adj.轻率的;头朝前的;迅猛的 adv.头朝前地;迅猛地，莽撞地
Moreover, the amateur(业余的) tradition in music criticism has been in headlong retreat(衰退).
headhunter---n.猎头，物色人才的人;猎取人头的蛮人
For years executives and headhunters have adhered to(坚持) the rule that the most attractive CEO candidates(候选人) are the ones who must be poached(挖来).
head for---驶向;走向
chief---n.负责人;首领
talent---n.天资;才能
respect---n.尊敬;重视;遵守;顾及 v.尊敬，尊重;方面;[pl]敬意;问候
respected---adj.受尊敬的;受重视的;被认可的
respectable---adj.值得尊重的;可观的，相当大的;人格高尚的
Tommasini regards Gilbert as an artist who is modest.
respectively---adv.分别地，各自地
irrespectively---adv.无关地
with respect to---关于
in respect of---关于;涉及
A parallel(平行的，相同的) situation exists in respect of predatory mammals(肉食性哺乳动物) and fish-eating birds.
esteem---v.尊敬;尊重;敬重 n.尊敬;尊重;敬重
Business-method patents lower the esteem for patent holders.
maintian---v.维持，保持，坚持;主张;供给;瞻仰
Ryan's comments suggest that the practice of standard testing
A.prevents(阻碍) new habits from being formed
B.no longer emphasizes commonness(平庸).
C.maintains the inherent(内在的) American thinking model
D.complies with(与...一致) the American belif system.
retain---v.保持;保留;保存;付定金聘请(律师)
upload---v.维持;支持
sustain---v.使持续;保持;经受;遭受
primary---adj.最初的，初级的;首要的，主要的;基本的
I shall define him as an individual who has elected as his primary duty and pleasure in life the activity of thinking in Socratic(苏格拉底的) way about moral problems.
primarily---adv.主要地
The test comes primarily in two forms: the Stanford-Binet Intelligence Scale and the Wechsler Intelligence Scale(both come in adult and children's version).
prime---adj.最好的;首要的 n.全盛时期;最成功时期 v.事先指点，使做好准备
When Hoffa's Teamsters(卡车司机们) were in their prime(最初时期) in 1960, only one in ten American government workers belonged to a union;now 36% do.
principal---adj.最重要的;主要的
central---adj.中心的;最重要的