They were worried by two side effects that cropped up.

突然出现的两种副作用令他们担忧。

It's big, I know. It just appeared one day.

很大，我知道。有一天突然出现的。

The rings suddenly hugging Earth would disrupt internal navigation systems of some animals.

突然出现的环绕地球的行星环会破坏某些动物的内部导航系统。

In about 90% of cases, the disease arises suddenly, with no apparent cause.

在大约90％的情况下，疾病是突然出现的，没有明显的原因。

Now I stared at this sudden apparition with my eyes fairly starting out of my head in astonishment.

我惊奇地睁大着眼睛看着这突然出现的小家伙。

Remember scrolling through the radio dial, hoping a tune you liked would pop out of the static?

还记得在收音机上调台，希望你喜欢的曲子突然出现的候吗？

That's why astronomers recommend extreme caution when viewing an eclipse; because that flash can catch you by surprise.

这就是为什么天文家建议观测要格外小心的原因；因为那道突然出现的强光可能会让你措手不及。

Of course, some old people do suffer from physical illnesses, but these do not suddenly develop on their 65th birthday.

当然，有些老人确实患有生理疾病，但这些疾病不是65岁生的候突然出现的。

Then there's the kind of traffic that occurs out of nowhere.

然后是突然出现的那种交通。

And she kinda just popped into my life.

而她她突然出现在我的生活中。

They gazed across the massive gorge that had suddenly appeared in their path.

他们凝视着突然出现在面前的巨大峡谷。

That bench came out of nowhere, though.

但那张长凳却是突然出现的。

And so it was like wham outta nowhere.

所以这就像突然突然出现的一样。

'What is this that has turned up so unexpectedly'?

‘突然出现的这是什么东西’？

He looked startled by Fireheart's sudden appearance.

他被突然出现的火心吓了一跳。

Bogan is captivated by these pop-up aquatic ecosystems...and he travels far beyond his home base in Arizona to find them.

博根被这些突然出现的水生生态系统所吸引.....他远远离开亚利桑那州的家去寻找它们。

The why and wherefore of this sudden appearance he did not pause to consider.

他没有停下来思考这个突然出现的原因和原因。

Gloria's penchant for premonitions and her bursts of vague supernaturalism were a surprise to Anthony.

格洛丽亚对预感的嗜好和她突然出现的模糊的超自然主义让安东尼大吃一惊。

I am utterly thrown by the sight of him standing before me.

他突然出现在我的视线中，我完全失去了意识能力。

So I stared wide-eyed at this apparition.

我睁大眼睛看着突然出现的小家伙。