Leonard：Great. Did we say a time?

Penny：6:30.

Leonard： And that's still good?

Penny： It's fine.

Leonard：'Cause it's not carved in stone.

Penny： No, 6:30's great.

Leonard：I'll get my chisel.

Penny：Why?

Leonard：To... carve the...I'll see you at 6:30.

carved/etched/set/written in stone
【釋】permanent or not able to be changed
【例】These new rules are not carved in stone; if they don't work, we'll change them.
生活大爆炸S01E03 MJE美劇筆記 失戀的Leonard之二

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作者@MJE美劇口語聯(lián)盟