shī gōng rén yuán / cè liáng / le / yuán xíng / guǎng chǎng / de / zhōu cháng / yǐ biàn / jì suàn / wéi lán / xū yào / de / cháng dù

施工人员测量了圆形广场的周长，以便计算围栏需要的长度。

The construction workers measured the circumference of the circular plaza in order to calculate the length of fencing required.