视镜是必不可缺的，可是它们妨碍了视线。

Glasses are, of course, an indispensable thing, but they worsen the sight.

youdao

视镜是必不可缺的，可是它们妨碍了视线。

Glasses are, of course, an indispensable thing, but they worsen the sight.

youdao