developing or happening gradually

There's been a progressive decline in the standard of living over the past few years. 最近几年的生活水平每况愈下。

Progressive ideas or systems are new and modern, encouraging change in society or in the way that things are done.

progressive ideas/attitudes 进步的思想／态度

The left of the party is pressing for a more progressive social policy. 该政党的左派敦促实行更加进步的社会政策。

a progressive school 实行进步教育法的学校

A progressive tax system is one in which the rate of tax is higher on larger amounts of money.

The progressive form of a verb is used to show that the action is continuing. It is formed with the verb "be" followed by the present participle (= -ing form of the verb).

"He's working hard at the moment" is an example of the present progressive form of the verb "work". He's working hard at the moment 是动词 work 的现在进行时的一个例子。

"I was eating when the phone rang" is an example of the past progressive. I was eating when the phone rang 是过去进行时的一个例子。

a person who supports new ideas and social change, especially one who belongs to a political party