a.

1. 页边的，栏外的[B][Z]
   marginal notes

   旁注

2. 边缘的；边境的
   marginal people

   边民

3. 临界的；最低限度的
   a marginal standard of living

   最低限度的生活水平

   a marginal business

   盈利甚微的企业

4. 微小的；不重要的
   There has been a marginal improvement in the firm's sales.

   公司的销售额略有增长。

adj.

1. relating to or situated at the margin:
   marginal notes.
   ▸relating to water adjacent to the land's edge or coast:

   marginal aquatics.
2. of secondary or minor importance.
   ▸(of costs or benefits) relating to or resulting from small or unit changes.
3. (of a decision or distinction) very narrow.

n.

1. Brit. a marginal parliamentary seat.
2. a plant that grows in water close to the edge of land.