例句：

　　The firm is introducing a shorter working week.

　　這家公司要采用較短的周工作時(shí)間。

　　Put the shortest flowers in the front.

　　把最短的花放在花束的靠前位置。

　　Small children have a very short attention span.

　　幼兒的注意力持續時(shí)間很短。