Black smog reduced visibility to about fifty yards.

黑色的烟雾使能见度降到大约五十码左右。

youdao

The dust storm has reduced visibility to nearly zero.

沙尘暴使能见度降到几近零。

youdao

Where systems did communicate, they introduced tight dependencies by using proprietary APIs, which proved unreliable and reduced visibility.

在系统彼此通信的情况下，由于使用了专用 API，因而存在紧密依赖关系，这种方式不可靠，而且会降低可见性。

youdao

The added radar also means the lifeboat can operate more effectively in reduced visibility.

BBC: RNLI Lifeboat

Rox said its "highly sophisticated" new smoke cloud system released a heavy fog which reduced visibility when activated.

BBC: Rox in George Street in Edinburgh

Moreover, if pilots are grounded by reduced visibility during, say, a dust storm, the unmanned version keeps going.

ECONOMIST: Autonomous helicopters