number one

音标发音

It is the number-one portable gaming handheld in the world, according to Jobs.
根据乔布斯的说法，它是世界第一的便携式手持游戏终端。
The DUI is far and away the nation's number-one overall cause of annoying sports stories. It's also the most preventable.
醉酒驾驶无疑是全国第一令人讨厌的体育话题的第一原因，而且它差不多是可以预防的。
Heart disease remains the number-one killer of women in the U.S., but you can control the most important risk factors—high blood pressure, cigarette smoking, high cholesterol, inactivity, and obesity.
心脏病是美国女性的第一杀手。但是你可以通过控制以下重大的风险因素如高血压、吸烟、高胆固醇、不活动和肥胖。

Jim Jennings from the Allstate Insurance Company says the number one cause of distracted-driving accidents is the mobile phone.
And that keeps people trapped in abusive relationships but-- And that's number one, ? but what else might be going on?
这些考虑使得人们被困在家庭暴力中-,这是第一个原因，还有什么原因呢？
耶鲁公开课 - 心理学导论课程节选
Objection number one - and here I'll come down to - I wanna talk to team libertarian over here.
第一条反对，我先到下面去-,到这边来和自由主义队员对话。
耶鲁公开课 - 公正课程节选

At first he pretended that it was his number-one hero, Shazam, who wanted to date them.
NPR: Diaz's First Novel Details a 'Wondrous Life'

(YOURSELF) yourself and no one else
(THE BEST) the most important, best, most noticeable, or most famous person or organization in a particular area of activity

Number one means better, more important, or more popular than anything else or anyone else of its kind.
In popular music, the number one is the best-selling recording in any one week, or the group or person who has made that recording.