People may not have the same triggers.

因因人而异。

There are a lot of asthma " triggers" that can cause an asthma attack.

哮喘病发作有许多因。

Smoking is one of the biggest causes of lung cancer.

抽烟是癌症最大因之一。

Other triggers that can set off an attack are exercise and emotional stress.

其它因包括锻炼，情绪紧张。

Here are the triggers and symptoms of trypophobia.

以下是密集恐惧症因和症。

These are some of the triggers of trypophobia.

这些都是密集恐惧症一些因。

And leukoplakia specifically relates to a white plaque with no clear underlying cause.

口腔黏膜白斑特指有明确因白色斑块。

Couples' ageing relatives are part of the problem too.

夫妇老年亲属也是他们离因之一。

After all, heat is what often causes volcanic eruptions in the first place.

总来说，热量是引起火山爆发第一因。

This legislation is just not ready for prime time. It's an invitation for chaos. Chaos.

这项立法还有准备好。这才是混乱因。

Dr. Stevens, what are the primary causes of ventricular arrhythmias?

Stevens 医生，室律不齐主要因是什么？

A number of things can happen that cause the airways to get smaller and become inflamed.

导致呼吸道变窄，发炎因有许多。

This makes breathing very uncomfortable and can cause death.

这些因会致呼吸困难，或引起死亡。

Authorities say there is no indication that terrorism was the motivation for the attack.

当局说，有迹象表明恐怖主义是这次袭击因。

Everyone has different triggers, but a common one is cigarette smoke.

每个人都有不同因，但最常见是吸烟。

Of course, this isn't an all-inclusive list with every trigger.

当然，这并不是一个包含所有因清单。

And disturbances in norepinephrine transmission is thought to also be a key component in depression.

去甲肾上腺素传递紊乱也被认为是抑郁症关键因。

Doctors noticed the surge, but at first they couldn't figure out what was causing it.

医生们也注意到了这一情况，却有找到此中因。

Well, that is true. Poorly positioned streetlights are a major contributory factor in all of this.

是，街灯位置不当确实是一个主要因。

This is a devastating trend and many factors have come together to create a perfect storm.

这是一个毁灭性趋势，许多因共同导致了这场灾难降临。