If you look really carefully, you could find it was not a single line but two lines, and Bohr is silent on such matters.

如果你仔细观察的话，会发现这是两条谱线而非一条，对这一研究，波尔不得不沉默。

麻省理工公开课 - 固态化学导论课程节选

Well, Ameiricans has been so steadfastly disgreed although most silent on other issue What Karzai said from the very begining was that people who have not commited any war crimes, people who have not murdered people can lay down their arms pledgely.

虽然在其他问题上，美国都保持沉默,对于这件事，却是强烈反对,一开始卡尔扎伊就说,那些没有反战争罪，没有杀人的塔利班成员,可以放下武器。

普林斯顿公开课 - 国际座谈会课程节选

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