Indoor pollution, which includes sources like home heating and cooking, has remained constant over the past several decades despite advances in the area.

在过去几十年中，来源于诸如家庭供暖和烹饪等的室内污染持续存在，尽管在这方面已经有所改进。

youdao

This is an area where we will see constant improvement as time goes on.

随着时间的推移，我们将在这一领域看到不断的进步。

youdao

The pilots lost contact with air traffic controllers while flying across an area of the Atlantic Ocean known for constant bands of severe turbulence.

当飞机经过大西洋海域上空某处经常出现成片剧烈涡流的区域时，与空中交通控制员失去了联系。

youdao

"The Protestant community of this area are in constant fear of raiders from across the border, " he said.

BBC: British favoured closing Aghalane Bridge

In the London area there's a constant low-level clacking noise in the background, reminiscent of the typing pools of yore.

BBC: Why air traffic control still needs the human touch

"It depends on how long they would have been in the area that's contaminated, how constant the the level of asbestos fibres in the air are, " he said.

BBC: Cwmcarn school asbestos should be demolished, says survey