The workmen were cementing the sidewalk.是什么意思？

The workmen were cementing the sidewalk.

工人们在人行道上浇筑水泥.

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。

workmen

n. 技术工人，工匠( workman的名词复数 )，工人，工匠，工作者，体力劳动者；

例句
In University Square workmen are building a steel fence...
在大学广场上，工人们正在修建钢栅栏。

were

be的过去时复数和第二人称单数形式，有时代替 was,用于条件从句、动词 wish 之后等；

例句
Shops, houses, and vehicles were set ablaze.
店铺、房子和车辆全都陷于火海。

cementing

n. 胶接，溶接，粘合；v. 粘牢( cement的现在分词 )，巩固，（用水泥、胶等）粘结，在…上抹水泥；

例句
Application of accelerant CaCl 2 in deepwell cementing was not allowed for some time in Liaohe Oilfield.
深井添加CaCl2促凝剂固井在辽河油田一度视为禁区.

sidewalk

n. 人行道；

例句
He stood on the sidewalk with his hands buried in the pockets of his dark overcoat.
他站在人行道上，双手插在黑色外套的口袋里。