5.amount of work done(工作的)件：

pay sb. by the piece/by hours 按件/时付给某人工资

a piece of一张(块/条/则/片)

pig [pIg]n.1.a fat short-legged animal with a usu. curly tail and thick skin with short stiff hairs, esp. as kept on farms for food猎

4.single thing out of a set件；个

3.single composition (in art, music, etc.)幅；张；首

2.separate instance or example个别的事例

4.a cinema film影片;

picture-book图画书

take picture of给照像　 [辨析]picture, photo, painting, drawing, portrait:　 picture 含义较广,可指相片、 图片、电影片等； photo是photograph的缩写形式，仅指用照相机拍摄的相片；painting指着色的画， 如水彩画，油画等；drawing指用钢笔或铅笔画的线条画或素描；portrait指人或动物的照片，用线条或颜料画的人或动物的画，特别指面部的画，或指生动的人物描写或刻画

pie [pai]n. an often round pastry case filled with meat or fruit, baked usually　 in a deep dish 馅饼

piece [5pI:s]n. 1.part or bit of a solid substance (complete in itself, but broken, separated, or made from a large portion)块；片；段；部分

3.a representation of somebody or something made by painting, drawing, or photography图片

2.a photograph照片

3.to steal or take from, esp. in small amounts 扒窃； 窃取： pick out选出； 认出　 pick up拾起；拿起；搭乘(客人)；接收；用较少的钱买到　 [辨析]pick, choose, select:　 choose是一般用词，通常指在所提供的对象中，凭个人的判断力或一定标准选择最满意的人或物，特别是从两者中抉择其一；select是正式用词，语气较强，指有目的地仔细认真地选择最好的，有“精选”的涵义，不能用于两者之间选择；pick 是口语用词，指按个人喜好或希望挑选中意的， 多用于有形的东西(人或物)。

picnic [5pIknIk](picnicked) n. a pleasant trip in which (cold) food is taken to be eaten somewhere in the country野餐;

have / go for /on a picnic 举行/去野餐

v. to go on or have a picnic野餐

picture [5pIktF[]n.1.a painting or drawing 图画；画

2.　　 to pull or break off (part of a plant) by the stem from a tree or plant; gather 摘；捡；拾

3.of the laws of nature自然规律的

[对]mental

adv. physically

piano [pI5An[U]n. a large musical instrument, placed by pressing narrow black or white bars which cause small hammers to hit wire strings 钢琴： play the piano 弹钢琴(演奏乐器，乐器名词前要带定冠词)pianist

n. a person who plays the piano, esp. with skill钢琴家

pick [pIk]v. 1.to choose挑选