close 较多地用于正式或庄重的文体中，如关闭铁路、公路以及其它交通渠道，要用close。
shut 着重关闭的动作、过程和方式手段。
slam 象声词，指“砰的关上”，或用力关上。
参考例句
1. He was slammed to the street by the crowd. 他被人群硬推上了大街。
2. Why should you slam the window? 你干吗要使劲关窗户呢?
3. The woman shut the trapdoor with a slam. 这位女主妇砰的一声关上活板门。
英英解释
n.
1. winning all or all but one of the tricks in bridge
2. the noise made by the forceful impact of two objects
3. a forceful impact that makes a loud noise
4. an aggressive remark directed at a person like a missile and intended to have a telling effect v.
1. close violently
2. strike violently
3. dance the slam dance
4. throw violently
网络释义
SLAM 摔 滑手从板上摔下。;
偶氮磷;
单层金属化;
猛击;
grand slam 大满贯;
指澳网、法网、温网、美网四大满贯赛事;
大满贯测井;
大满贯（赛事）（即一年内赢得全部四大赛）;
