Each poster is signed by the artist...是什么意思？

Each poster is signed by the artist...

每幅海报都有这个艺术家的签名。

each

adj. 每，各自的；pron. 每个，各自；

例句
They were completely absorbed in each other...
两人彼此倾心。

poster

n. 海报，招贴，公告，招贴画，张贴者，[古语]急行的人，匆忙赶路的人；

例句
The poster showed a caricature of Hitler with a devil's horns and tail...
海报漫画中的希特勒长着魔鬼的犄角和尾巴。

is

vt.& vi. 是（be的三单形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

signed

adj. 有符号的，有正负之分的；

例句
The two countries signed an agreement to jointly launch satellites.
两国曾签订了联合发射人造卫星的协议。

by

prep. 在…旁边，表示方式，由于，经过；adv. 经过，表示保留或保存时用，短暂拜访；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

artist

n. 艺术家，画家，能手，骗子；

例句
Eight drawings by French artist Jean Cocteau will be auctioned next week...
下周法国画家让·科克托的8幅作品将被拍卖。