Swanson persuaded Hubley to work undercover to capture the killer.斯旺森说服赫布利去做卧底以便将凶手抓获。Officers had tailed the gang from London during a major undercover inquiry...在一次重大的秘密调查行动中，警察从伦敦就盯上了那帮匪徒。You can spot undercover cops ...
Exercising the body does a great deal to improve one's health.锻炼身体对增进健康大有益处。Never keep on exercising if you have even the slightest chest pain.即使你只感到很轻微的胸部疼痛，也不要继续锻炼。Exercising at home alone requires a tremendous am...