But trains are also large, complicated, and expensive to repair when they break unexpectedly.

但是火车也非常大、复杂，并且在意外损坏时修理费用昂贵。

youdao

Never break 4 things in your life: Trust, Relation, Promise and Heart. Because when they break, it does not make any sound but pains a lot.

在你的人生中从不要弄破四样东西：信任，关系，诺言和心。因为当他们破了，是不会发出任何声响的，但却异常的痛苦。

youdao

Jen: A disposable society — you mean we just throw things away when they break and then buy another one?

一次性社会？你是说东西一坏，我们就扔掉，然后买新的？

youdao

Then when that fighting starts, they oughta feed you on buttermilk and black-eyed peas and let you break wind!"

为了让你有气力,他们会在战前填饱你，“

耶鲁公开课 - 1945年后的美国小说课程节选

So these devices, when I was a youngster, were colloquially known as "atom smashers", because they have the capacity to actually break these and have them reform.

这些设备，当我还年轻的时候，它们在口语中被叫做核粒子加速器，因为它们有能力,将这些破碎并重新形成。

麻省理工公开课 - 固态化学导论课程节选

When they do that they can actually engulf the bacteria in a process called phagocytosis and break them down into antigens.

免疫细胞确实是将细菌整个吞进了肚内,这一过程称为吞噬作用,并将细菌分解成小抗原

耶鲁公开课 - 生物医学工程探索课程节选

Steep uptrends are great to ride, but when they break you can sometimes see significant downside.

FORBES: Big Earnings Coming From Google, Apple, IBM, ISRG

When they break they release mercury vapours well in excess of safe limits.

FORBES: More Concerns About Cancer and Energy Saving Light Bulbs: Justified?

This may seem a paradox, but that's what we want from newspapers and journalists even when they break the law.

CNN: Opinion: Why journalists need public interest defense