英语语法分析

These devices usually use lenticular lenses to project different images in two fixed directions.

这些设备通常都使用透镜镜头，将不同的图像向两个固定的方向投影。

Lenticular clouds (via wired.

荚状云 (via wired.com)

Sometimes likened to UFOs, lenticular clouds are usually created by gravity waves.

透镜状云彩很像UFO，它通常由引力波造成。