Conceptually, the entire business from first customer contact, through completion of the work and payment of the bill, represents a single, macro-level unit of work, with a lifetime of days to weeks.

从概念上讲，从第一次顾客联系到完成工作和帐单支付的整个业务表示单个宏观层次的工作单元，并具有数天到数周不等的生命周期。

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Unit will attack any enemy it comes into contact with, but will only pursue it a short distance.

被设置成该姿态的单位接触敌人后立即攻击，但只会在一定范围内追击。

youdao

Unit will attack any enemy it comes into contact with, but will not move from its position.

被设置成该姿态的单位接触敌人后立即攻击，但不会追击。

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And he says that the Muslim Contact Unit and its partners got results, persuading young men that the answers to their anger lay in politics rather than violence.

BBC: Hearts and minds: London's street battle with al-Qaeda

Two wards and the elderly assessment unit at the hospital currently have restrictions in place and visitors to these are advised to contact the ward or unit first before visiting.

BBC: Poole Hospital norovirus outbreak

Lastly, the IRS advises that if you think you may be at risk for identity theft due to a lost or stolen purse or wallet, questionable credit card activity, or unexpected bad credit report, contact the IRS Identity Protection Specialized Unit toll-free at 1-800-908-4490.

FORBES: IRS Issues Advice On How To Avoid Identity Theft