focus[5fEukEs] n. 1.[C](光或声的)中心点，源 2.[C]焦距 3.[C]聚焦，调焦 4.[C](常用单)兴趣中心，注意的中心，焦点：Her beauty makes her the focus of attention. 她长得漂亮，很惹人注目。v.1.能看得清楚：Gradually his eyes focused. 他渐渐看清楚了。2.调焦距：I focused on the person in the middle of the group. 我把焦点对准站在人群中央的那个人。3.使集中于，集中：All eyes were focused on the speaker. 大家的目光都集中在发言人身上。■in focus 清晰 / out of focus 不清晰

【说明】1.用作名词时，其复数 focuses 或 focuci。2.用作动词时，其过去式、过去分词及现在分词可双写s也可不双写(focused / focussed, focusing / focussing)。

fog[fCg] n.[U,C]雾：The fog will clear by late morning. 快到中午的时候大雾就会消失。/ The fog was so thick that I could not see my way. 雾很大，我都看不见路了。

【说明】作为物质名词，表示“雾”，不可数；若表示“有雾的一段时间”，则可数。

foggy[5fCgi] adj. 1.多雾的：a foggy day 大雾天 2.模糊的：I have only a foggy idea of the matter. 我对那件事情只有一个模糊的概念。

fold[fEuld] v. 1.折叠：She folded the letter up [in half]. 她把信对折起来。2.合拢：The bird folds its wings. 鸟收拢翅膀。

folk[fEulk] n.1.[C]人们：Some folk seem unable to spend money. 有些人似乎不会花钱。2.(用one’s folks)家人，父母：I’d like you to meet my folks. 我要你见见我的父母。adj.民间的：folk songs 民歌 / a folk singer 民歌手 / the folk-dances of Turkey 土耳其民间舞蹈

【说明】folk表示“人们”与people(人们), police(警察)一样，是一个永远表示复数意义的名词，但有所不同的是，folk可后加词尾-s：Some folk(s) are never satisfied. 有些人永远不满足。

follow [5fClEu] v. 1.跟随，跟着：Go on ahead and I’ll follow. 前面走着吧，我跟着你。2.仿效，遵循：The villages still follow the customs of their grandfathers. 村民仍然遵循他们祖先的习俗。3.顺着，沿着：Follow this road to the bridge. 沿着这条路到桥头去。

following[5fClEuiN] adj. 1.接着的：I came back from holiday on Sunday and went to work on the following day. 我星期日度假回来，第二天就上班了。2.以下的：Answer the following questions. 回答下列问题。n.(连用the)下面的人或物：The following is my full name. 下面是我的全名。prep.在…后：Following the lecture, a discussion was held. 讲座之后开了讨论会。■as follows 如下：The results were as follows. 结果如下。

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