行动: 1.(行走; 走动) move about; get about 短语和例子行动不便 have difficulty getting about; 行动缓慢 move slowly; be slow-moving2.(为实现某种意图而活动) act; take action 短语和例子行动起来 go into action; 行动果断 put one's foot down
单元: (自为一组的单位) unit; unit element; [计算机] cell; location; [电学] sub-unit; element 短语和例子运算单元 arithmetic unit; 记忆单元 memory location; 教学单元 teaching unit; 十八号楼四单元二号 no.2, entrance 4, building 18
