例句與造句

1. Optics comprised dual lenses with adjustable focus and interpupillary distance.
2. Adjustable focus eyeglasses have one focal length, but it is variable without having to change where one is looking.
3. The scanner, of course, does not feature adjustable focus, so the sharpest focus will always be closest to the glass.
4. It produces still pictures in millions of colors at 640 x 480 pixel resolution and has a fast, manually adjustable focus lens for images from less than 1-inch to infinity.
5. It's difficult to find adjustable focus in a sentence. 用adjustable focus造句挺難的