They're all happily following the on-stage action, apparently oblivious to the bizarre optical illusion taking place before their very eyes.

他们开心地看着舞台上的表演，显然，面对这些光怪陆离的幻觉，你已经快疯了，他们无所谓。

youdao

They offer clearer and sharper images. Many of them also have up to 20x optical zoom lens, a photo mode and fast-action mode.

它们的画质更加清晰分明。其审很多款产品带有高达20倍的光学变焦镜头，并且有照相模式和速拍模式。

youdao

The result shows that the optical thickness of the west of Bohai sea region is influenced by both Bohai sea and human action, and each wave band's optical thickness is big.

结果表明，渤海西岸大气气溶胶受渤海海洋和人类活动共同影响，各波段光学厚度都较大；

youdao

The 31-year-old was later cleared by the ICC after a University of Western Australia biomechanical analysis, which concluded that the bent-arm action created an "optical illusion" of throwing.

BBC: Muttiah Muralitharan

The HC-V520 also makes an appearance with its 50x optical zoom full HD and 5-axis OIS. If you want some 3MOS action with manual ring, EVF and level gauge action then the HC-X920 is the one for you.

ENGADGET