你怎么知道...

(跟汪大柱不一样) ── Previous context

“Why are you so sure I'm watching you”

(不搏一下) ── Previous context

“I have to take the risk to see if there's a chance.”

(蛊毒可已清完了) ── Previous context

“How do you know she was gone all night?”

(他的凶器应该是在附近买的) ── Previous context

“How do you know that it didn't come from home?”

(这一个) ── Previous context

“[chuckles] It's three. No way! You cheated somehow.”

(与奴婢有肌肤之亲呢) ── Previous context

“How do you know he was a proper gentleman?”