front single-lens element

例句：

1. 1. The car is parked in the front of the building.
   汽车停在大楼前面。
2. 2. She stood in the front row to catch a better view.
   她站在前排以便看得更清楚。
3. 3. The team lined up in the front for the starting signal.
   队伍在起跑信号时排列在前部。