unescorted [ˌʌnɪs'kɔ:tɪd]

例句:

• The President's unescorted vehicle was ambushed just outside the capital.
  刚出首都，总统无人护卫的汽车就遭到了伏击。
  来自柯林斯例句
• They advise against foreign delegates wandering unescorted in various parts of town.
  他们建议外国代表在没人陪同时不要在城镇四处游逛。
  来自柯林斯例句
• He worked as a dancing partner for unescorted ladies at Manhattan cabarets.
  他的工作是在曼哈顿的夜总会陪没有舞伴的女士跳舞。
  
• Unescorted bombers ran a high risk of annihilation.
  来自H. Wouk