ground(s), striking, classified

• ground(s)／根拠、理由（a good reason for doing, believing, or saying something）
  • Mental cruelty can be grounds for divorce.
  • There are strong grounds for believing his statement.
  • Did the police have reasonable grounds to arrest him?
  • The proposal was rejected on environmental grounds.
• striking／一目をひく、印象的な
• classified／機密扱いの　※classify＝「分類する」しか頭になかった。