Why aren't all lenses supplied with a lens hood?

为什么不给所有的镜头都配上遮光罩呢？

柯林斯例句

Cataracts is a condition that affects the transparency of the lenses.

白内障是一种影响晶状体透明性的疾病。

柯林斯例句

Use a weatherproof rucksack to carry your camera and lenses around in.

用防风雨的帆布背包装照相机和镜头。

柯林斯例句

A bank of telephoto lenses homed in on him.

一整排的远摄镜头都对准了他。

柯林斯例句

The eyes behind the lenses were dark and quick-moving, taking in everything at a glance.

镜片后面的黑眼睛快速转动着，扫一眼就全都记下了。

柯林斯例句

As we age the lenses of the eyes thicken, and thus refract light dif-ferently.

随着我们年龄的增长，眼睛的晶状体变厚，因此对光线的折射也会发生变化。

柯林斯例句

She could see herself in the reflecting lenses, which had grotesquely foreshortened her.

她能够看到自己在反光镜中被缩小的古怪形象。

柯林斯例句

Probably because the cemented lenses are distorted by temperature variations.

这大概是因为胶合透镜会因温度变化而变形.

辞典例句

Skin cells just in front of them differentiate to form lenses.

它们前面的皮肤细胞就分化而形成晶体.

辞典例句

These lenses are therefore suitable when using the mercury green band.

所以,当采用水银灯的绿色光带时,此种透镜是适用的.

辞典例句

His eyes seemed to goggle larger than usual behind the heavy lenses.

在厚厚的镜片后面,眼睛瞪得比平时大得多.

辞典例句

Light is condensed by means of lenses.

光线由透镜聚焦.

辞典例句

These sandstone bodies form elongate lenses.

这些砂岩体形成伸长的透镜体.

辞典例句

Although warped by compaction, there is only stight folding of the sandstone lenses.

虽然由于压实作用而弯曲, 但砂岩体褶皱很轻微.

辞典例句

This approach has been used to advantage in the design of a number of photographic lenses.

这种方法成功地应用在一些照相镜头的设计中.

辞典例句