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considerably ad.:相当的

程度词 considerate:体贴的， 考虑周到的

sb.+thoughtful, helpful, cooperative

considerable+sth.

I make considerable money.(=substantial)

positive 确实的

The result is positive. His words are positively right. 只做程度副词

He is positive in the class.(活跃、积极) = active positive:成阳性的

patent v.:获得…专利权

My invention is patented. I’ll/I’d like to paten my invention.

获得专利：take out a patent 专利局 patent office 专利人：patentee

patenter 专利权许可者

(adj.)明显的，显著的=obvious It is patent that he loves the girl.

seek for 寻求

seek for freedom seek truth seek for true love seek for justice

seek after(指人) 过去分词:sought

He is much sought after. 这个人红得发紫 The book is sought after.这本书畅销

chance a.: 偶然性的

It is my chance discovery.随便得到 chance companion 萍水相逢

偶然发现的东西 I find it by chance. I chance to be there.

extent n.: 程度

to some extent /degree

agent n.:情报人员

be likely to…可能会…..

it+possible

it/sb.+likely

可能性：likelihood

Notes on the text 课文注释

Two factors:两个因素 weigh against:不利 heavily—副词 effectiveness:效果

给出主题句

general secrecy 普遍存在的保密性 atmosphere:氛围，气氛 it—research

One …,the other the tack of freedom of the individual research worker.

Two factors weigh heavily against the effectiveness of scientific in industry. One is the general atmosphere of secrecy in which it is carried out, the other the lack of freedom of the individual research worker. ...