closely

紧密地；接近地；严密地；亲近地英释中释advvery carefully

1 closely packed,密堆积的

2 be closely related with,与...有密切联系

1 The detective watched him closely , waiting for a reply..侦探紧盯着他看，等着他回答。

2 Details of the program are a closely-guarded secret ..该项目的细节是严格保密的。