at one sitting

基本解释

So you could easily take in 800 to 1,600 calories at one sitting choosing the high-fat options.
所以你可以容易地吃掉800至1600卡路里的高脂肪食物。
www.chinadaily.com.cn
Chocolate doesn't make you 'high'. You'd need to eat a huge quantity (about 25lbs at one sitting) to feel any noticeable effect.
巧克力不会使你兴奋。你需要吃大量（一口气大约吃25磅）的巧克力才能感觉到明显的反应。
The 500-plus performers hail from virtually all the minority tribes of Yunnan, entertaining 3,000 visitors at one sitting, come rain, shine or snow.
无论阴晴雨雪，来自云南各少数民族的500多名演员都会为在座的3，000多位观众奉上连台好戏。

Some of those is hard to put a price on, but I would say through the entire show we got to have $50,000, sitting in the show at one time.
So I should warn the people sitting at the back that my handwriting is pretty bad, that's one reason for moving forward.
提醒一下坐在后面的人,我的板书写得很糟,所以最好往前坐
耶鲁公开课 - 博弈论课程节选
And also, as I'll discuss in a minute, a lot of people don't recognize what a portion is, and because the food industry has been very successful at recalibrating us to think about what's acceptable to eat in one sitting at one time, and because of that our notions of portions have been thrown way off.
同时,马上我要讲到,很多人不知道摄入量是什么,因为食品业,成功的重塑了我们,就坐用餐时关于什么东西是可食用的看法,而这使我们对摄入量这个概念,有了不同看法
耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Sure enough, the people who received those tubes, as opposed to conventional packages of chips, restricted the number of chips they ate at one sitting.
FORBES: Stop Signs In Food - The New Secret to Weight Loss