She led him through the house to each of the cable boxes, sipping her drink as she went. She was drinking straight bourbon, it seemed.

芭芭拉带着他走遍房子，调整每一个有线电视盒，她边走边喝酒，看起来她好像喝的是没掺水的波旁酒。

youdao

It is basically a way (or excuse) to drink straight bourbon that tastes diluted, a much easier (and faster) to consume mixed drink, but is in fact near full strength.

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If I want lukewarm, I can drink my rye or bourbon straight.

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