But also, switching out the trans fat in another kind of fat doesn't change the calories at all.

同样地,用其它的脂肪来代替,反式脂肪酸不会改变食物的总热量

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Some of this can be done if consumers make different choices in what they eat, but some can be silent changes too, so Frito-Lay taking the Trans fats out of their products and switching them with a healthier fat is a silent change that could have a positive impact on public health.

有些只要消费者选择其它的食物即可做到,但也有些变化是悄无声息的,菲多利将其产品中的反式脂肪,替换成更健康的脂肪就并未声张,这对大众健康有着积极的影响

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

So turns out C supports what's called a switch, a switching construct.

所以C语言支持叫做switch的东西，一个开关结构。

哈佛公开课 - 计算机科学课程节选