Translation

• (military) line of troops encircling an enemy position
• (telephony) outside line
• (basketball) outside the three-point line

Examples

• 紫外线可导致皮肤癌。
  Ultraviolet rays can cause skin cancer.
• 人会因为体温而在红外线摄影机上显现。
  People show up bright on an infrared camera because of their body heat.