"If we don't ask about sleep and try to improve sleep patterns in kids' struggling academically, then we aren't doing our job," F said.

“如果我们不询问孩子的睡眠情况，不努力改善孩子在刻苦学习时的睡眠模式，那么我们就没有做好自己的工作。”F 说道。

youdao

So, for example, if we need air superiority capabilities in 2025, and we are not going to buy sufficient F-22s, we better begin a new air superiority fighter program today.

举例来说，如果我们在2025年需要空中优势的能力，我们又不打算购买足够的F – 22 那么 我们最好今天就开始一个新的空中优势战斗机的项目。

youdao

F: Well, we have all kinds of beverages in addition to fruit juices.

空服员：是这样的，除了果汁外，我们还有各式各样的饮料。

youdao

Join us again next week as we conclude the story of the life of writer F.Scott Fitzgerald in Special English on the Voice of America.

VOA: special.2010.11.21

So if we want to write out what that would be, it would just be to say that f minus is isoelectronic with neon.

那么如果我们把它写出来，它应该就是负一价的氟离子与氖原子是等电子的。

麻省理工公开课 - 化学原理课程节选

So, we can say that -- if we have neon here and we want to think about what's isoelectronic, -- f minus would be isoelectronic. We also have oxygen -- what would the charge on oxygen be? Um-hmm, right. 2 minus.

那么，我们可以说--如果我们这里有氖原子,而我们想知道与它等电子的是什么，负一价的氟离子就是与它等电子的，我们还有氧-,氧应该是几价的？没错，负二价。

麻省理工公开课 - 化学原理课程节选

For instance, when we had the opportunity to sell India the upgraded F-16s, we chose not to do that.

FORBES: Governor Perry's Bad Night

Congress, at that time, demanded that we halt the testing of the F-15 ASAT until we were prepared to enter negotiations on a comprehensive ban of all anti-satellite testing and deployment.

CENTERFORSECURITYPOLICY: Space power: What is at stake, what will it take

We took it for a quick flight through some canyons in an F-16 and, though we nearly blacked out a few times and came close to losing our cookies thanks to the over-sensitive head tracking setup, we have to admit the HOTAS was quite a joy to use.

ENGADGET: Thrustmaster unveils its perfect replica HOTAS Warthog flight controller, we go hands-on (video)