Small- to medium-sized apertures in the f-8 to f-16 range work well.

在f8到f16这种小到中型的孔径会拍得很理想。

youdao

The F-8 drifted out of formation but returned to within 5ft of PR-32's port wing at the same altitude.

这架歼八飞离了编队，但是又回到PR—32舱门方相同高度距离5英尺的地方。

youdao

The F-8 pilot slightly raised the nose of his aircraft in what appeared to be an effort to slow his aircraft.

歼8飞行员轻抬其飞机的机头，显然是要努力使他的飞机减速。

youdao

The current range of 21st century warming, according to the Intergovernmental Panel on Climate Change, is 3-8 F.

CNN: Clouds' role in global warming studied

The new optional engine on Silverado and Sierra also beats out the 15 mpg in the city and 21 mpg on the highway yielded by the 5.0L V-8 engine in two-wheel-drive versions of the F-150 and the 14 mpg in the city and 20 on the highway provided by a 4.7L V-8 engine in two-wheel drive versions of Ram.

FORBES: GM Scores EcoBoost Via Higher MPG Claim On New Silverado

Consumers have already responded to the Administration's fuel efficiency standards for Model Years 2011 through 2016, and it shows in the popularity of cars like GM's Chevy Cruze and trucks like the Ford F-150 equipped with an EcoBoost engine instead of the conventional V-8.

WHITEHOUSE: Our Top Stories