Many people swear by vitamin C's ability to ward off colds.

很多人深信维生素C能预防感冒。

《柯林斯英汉双解大词典》

Take Two Chocolates And Call me in The Morning: Participants in an aspirin study who couldn't swear off chocolate helped researchers find some sweet science.

吃两块巧克力，早上叫我起床：参与阿司匹林研究的参与者也不能发誓说巧克力帮助研究者找到了甜蜜的科学。

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Don't swear off eating anything but boiled gruel just yet.

不过你也不必发誓再也不吃任何东西，而只是吃些粥。

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