declining是什么意思？

Mass market paperbacks, which have been declining for years anyway, will probably disappear, as will hardbacks for mysteries, thrillers, "romance fiction," etc.

French Emperor Napoleon Bonaparte was known to be unimpressed by the declining taste of early 18th century cooking, but under pressure to entertain Paris' high society, he too called Careme to his kitchen at Tuileries Palace.

I designed an eight-session workshop for 91 students whose math grades were declining in their first year of junior high.

Fully developed, mature, post-industrial societies, such as those in Europe, characterised by stable or declining populations which are increasing in age.

Late-stage developing nations that are currently industrialising rapidly, for example China, which will experience declining rates of population growth, coupled with increasing affluence (富裕）and age profile

Patrick Belser, an International Labour Organization specialist says declining wage rates are linked to the levels of unemployment.

These books reflect a trend particularly strong in Britain, where swimming in pools is declining, but more and more folks are opting for open water.