The stratospheric ozone layer, for example, is still getting thinner.

例如，在同温层高处的臭氧层还是日渐稀薄。

youdao

'It (the Protocol) has protected the stratospheric ozone layer from much higher levels of depletion by phasing out production and consumption of ozone depleting substances,' said the report.

报告说：“它(协议)保护了平流层，通过调整对臭氧层物质的平流层臭氧生产和消费消耗，从更高层次的消耗逐步。”

youdao