单语范例（未经PONS编辑处理）
To successfully audit any voting machine, a strict chain of custody is required.
en.wikipedia.org Registered mail is often backstamped in order to show the chain of custody.
en.wikipedia.org For prisoners in state custody, the availability of conjugal visits is governed by the law of the particular state.
en.wikipedia.org He willingly accepted sole custody of his child; however, the rooming house where he lived did not allow children.
en.wikipedia.org Such programs include child care services, senior citizen assistance, child custody services, disability vocational services, and services to the blind and deaf.
en.wikipedia.org