圏内

1. Origins, structure, and basic meaning

• Structure: 圏内 is read as けんない and indicates being within a defined range.
• Basic usage: Depending on context, it can mean within mobile coverage or within the range of positions that can place in a competition.

2. Common pitfalls and similar expressions

• Communication coverage
  • When a phone 圏内に戻る, it comes back into an area with mobile coverage. Example: 山を下ると携帯電話が圏内に戻った。
• Range for placing
  • 入賞圏内 means that a competitor's rank is within the range that can earn a placing. Example: 最後の一周で入賞圏内まで順位を上げた。