Pinkerton's agents performed services which ranged from the equivalent of both a private military contractor to that of security guards.
Pinkerton's agents performed services which ranged from the equivalent of both a private military contractor to that of security guards.
ピンカートン(探偵社)の探偵は民間軍事契約会社相当から、保安要員相当までの範囲にわたる業務を遂行した。
bothの意味は何でしょうか?