adv.警惕地；留心地
He was looking ahead vigilantly. 他警惕地注視著前方。
We must protect their identities as vigilantly as they protect our security, and we must provide them with the confidence that they can do their jobs. 我們必須警惕地保護他們的身份秘密就像他們保護我們的安全一樣，我們必須讓他們滿懷信心的繼續(xù)工作。
