1.后退,倒退,退步,消退,堕落,衰微;【天】逆行(运动);【生】退化;【化】逆反应
1.the process of returning to an earlier and usually worse condition
2.the development of less complex features usually associated with simpler organisms
1.China will surely achieve progress, the present retrogression is only a temporary phenomenon.
中国的进步是一定的，倒退只是暂时的现象。
2.From the Early Silurian large scale of retrogression had begun accompanying the Late Caledonian movement.
晚加里东运动（始于早志留世）发生了大规模的海退。
3.Biology variety of the globe continually forfeit and the ecosystem gradually degenerate, the local retrogression is quite graveness.
全球生物多样性在不断丧失，生态系统在逐渐退化，局部退化已相当严重，人类生存和发展的自然基础受到了极大威胁。
4.Third, firm adherence to the stand of progress and opposition to any retrogression .
第三，坚持进步的立场，反对任何的倒退运动。
5.So DXL may be preclude the further damage of cartilage, inhibit the retrogression of cartilage and promote the repair of cartilage.
因此可以认为，丹膝擦剂可以阻止软骨破坏的加重，抑制软骨退变的发展，促进软骨自身的修复。
6."We enter on an epoch of constitutional retrogression" (John R. Green).
我们进入了立宪的衰退阶段（约翰·R·格林）。
7.Different degree retrogression of articulation-cartilage often occurs after the operation.
髌骨切除术治疗后，常发生不同程度的关节软骨退变；
8.Some people think this is the progress of social civilization, some people think that this is a social retrogression, aesthetic degradation.
有人觉得这是社会文明之进步，有人认为这是社会的倒退，审美的堕落。
9.They advocate unification for resistance and not for capitulation, for unity and not for pision, for progress and not for retrogression.
非统一于投降而统一于抗战，非统一于分裂而统一于团结，非统一于倒退而统一于进步。
10.Progress or retrogression, there or not?
进步还是倒退，存在还是毁灭？