CID正在调查这起银行抢劫案。

The ___CID is investigating this bank robbery case.

我的手机可以显示来电号码，因为开通了来电显示功能。

My phone displays the caller's number because I have ___C.I.D. service.

许多投资者在2008年金融危机中因持有高风险债务抵押债券(CIDs)而蒙受损失。

Many investors suffered losses during the 2008 financial crisis due to holding high-risk ___CIDs.