■ under-

这是一个很有用的前缀，用了它，往往可以行文更为简短。

• The FDA has long been underfunded and understaffed. (US News & World Report, Sept. 15-22, 2008, p.27)药物食品管理局长期以来一直经费短缺，人手不足。

• dead
• dead 与 die
• deal
• deal with
• dear
• death
• debate
• decadent
• deceive
• decide
• declare
• decline
• dedicate
• deep down
• defense
• defy
• deny
• dependable
• dependence
• dependence 与 dependent
• dependent
• deprive
• deputy
• derive
• desert