adv.緊密地；接近地；嚴(yán)密地；親近地

They are closely interconnected. 他們彼此緊密地聯(lián)系著。

We can surely overcome these difficulties as long as we are closely united. 只要我們緊密團(tuán)結(jié)就能克服困難。

They watched him closely in case he should escape. 他們嚴(yán)密監(jiān)視他，惟恐他會(huì)逃脫。

They are closely related. 他們是近親。