English Slang collection：
dead ringer
[释] something that could be confused for something else, due to close appearance, etc.;
[例] Wow, that guy's a dead ringer for Elvis Presley.;
dead serious
[释] very serious;
[例] A: Did you lie about the accident? B: No...I'm dead serious.
dead soldier
[释] an empty (beer) bottle;
[例] After I finished my beer I left that dead soldier on the bar.;
dead tired
[释] overly tired and sickish;
[例] Can you guys imagine how I looked like after working for 18 hours straight? I was dead tried.
dead weight
[释] in a larger group, a person or group who does not contribute;
[例] I think we should send him to more training because he's just dead weight.;
deal
[释] agreement;
[例] They made a deal not to tell anybody about the board game results.