惊险的英文：
alarmingly dangerous; breathtaking; thrilling; adventurous

参考例句：

Detective story
惊险小说

a penny dreadful
廉价惊险小说

geek show
低级惊险节目的表演(如吞蛇等)

Most Americans prefer to read fast-moving adventure stories that we call "thrillers"
大部分美国人喜欢看我们称之为"惊险小说"的情节多变的冒险故事。

A detective,romantic,thriller,etc serial
侦探的、浪漫的、惊险的...连续剧

His thrillers make enthralling reading
他的惊险小说引人入胜

His acrobatics yesterday were thrilling.
他昨天的杂技表演十分惊险。

The underwater shots range from interesting to breathtaking.
水下镜头有趣惊险，无奇不有。

The gymnast dared a breathtakingly difficult move.
这位体操选手敢于做惊险的高难度动作。

"The game was, in a word,""thrilling."
"总而言之,这个游戏只有""惊险""二字形容。"

alarmingly是什么意思：
ad. 令人挂虑地

A sudden wind billowed the tent alarmingly.
一阵狂风使帐篷令人惊恐地鼓起了。

With the coming of the Industrial Revolution, the environmental pollution increased alarmingly.
随着工业革命的到来，它所引起的环境污染也正惊人地增长。

The old man's chest heaved alarmingly as he gasped for breath
这位老人喘气时,他的胸脯起伏得吓人。

dangerous是什么意思：
adj. 有危险的，引起危险的，不安全的

to court danger
招致危险

Be ware of danger!
当心危险！

Danger steadies some people.
有的人在危险时候反而坚定。

breathtaking是什么意思：
adj. 激动人心的；壮观的；惊人的，惊险的

An aeroplane offers you an unusual and breathtaking view of the world.
飞机上，你可以观察世界上非同寻常的奇妙的美景。

An aeroplane offers you an unusual and Breathtaking view of the world.
飞机为你提供非凡的，令人惊诧不已的地球景色。

He nevertheless completed the film with breathtaking speed.
但他还是以惊人的速度拍完了这部电影。