approach block length

例句：

1. 1.The engineer calculated the approach block length to ensure safety during construction.
   工程师计算了接近块长度，以确保施工期间的安全。
2. 2.The team worked diligently to meet the requirement for approaching block length.
   团队努力工作以满足接近块长度的要求。
3. 3.The new design aims to reduce the approach block length of the building to improve energy efficiency.
   新设计旨在减少建筑物的接近块长度，以提高能源效率。