adv.警惕地；留心地
He was looking ahead vigilantly. 他警惕地注视着前方。
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. 我们必须警惕地保护他们的身份秘密就像他们保护我们的安全一样，我们必须让他们满怀信心的继续工作。
