adv.紧密地；接近地；严密地；亲近地
They are closely interconnected. 他们彼此紧密地联系着。
We can surely overcome these difficulties as long as we are closely united. 只要我们紧密团结就能克服困难。
They watched him closely in case he should escape. 他们严密监视他，惟恐他会逃脱。
They are closely related. 他们是近亲。
