Howard (on laptop): This is one of my favorite places to kick back after a quest, they have a great house ale.
Penny: Wow, cool tiger.
Howard: Yeah, I’ve had him since level ten. His name is Buttons. Anyway, if you had your own game character we could hang out, maybe go on a quest.
Penny: Uh, sounds interesting.
Howard: So you’ll think about it?
Penny: Oh, I don’t think I’ll be able to stop thinking about it.
Leonard (entering with Sheldon): We’re home.
Penny: Oh, my God, what happened?
Leonard: Well, your ex-boyfriend sends his regards and I think the rest is fairly self-explanatory.
Penny: I’m so sorry, I really thought if you guys went instead of me he wouldn’t be such an ass.
Leonard: No, it was a valid hypothesis.
Sheldon: That was a valid hypothesis? What is happening to you?
【释】(formal or literary) a long search for something, especially for some quality such as happiness.(牛津高阶)这里是指游戏中的一次探险
【释】a type of beer, usually sold in bottles or cans. There are several kinds of ale.（牛津高阶）
【释】happening or done without any problems.(韦氏学习)
【例】With the aid of observers, the election process was a smooth one.(韦氏学习)
【例】They are introducing new measures to ensure the smooth running of the business.（牛津高阶）
send his regards
regards [plural] : friendly greetings（韦氏学习）
【例】Give/Send them my (warm/kind) regards. [=greet them for me; tell them I am thinking of them]（韦氏学习）
【例】My husband sends his regards.（朗文）
easy to understand without explanation
【例】The chapter titles of the book are self-explanatory.(韦氏学习)
【例】I don't even understand why you're asking me to learn this phrase, it seems so self-explanatory to me.(原创)
【释】 A vain, self-important, silly, or aggressively stupid person.(the free)
【例】You can be such an ass sometimes!(韦氏学习)
【例】They act like a couple of pompous/pretentious asses.（韦氏学习）
【释】fair or reasonable.(韦氏学习)
【例】There is no valid reason to proceed with the change.(韦氏学习)
【例】Police officers must have a valid reason for stopping motorists.（朗文）