inefficiently 

英汉解释

adv. 无效率地；缺乏能力地

反义词

r.   efficiently，expeditiously，with efficiency

参考例句

1. They get easy access to foreign capital and thus use it inefficiently.
他们很容易的得到国外的资金虽然使用的并不是很有效。
2. However, as the FEHD seems to have managed the oil fish affair quite inefficiently, how can citizens have faith in food safety in Hong Kong?
但食环署在油鱼事件所表现出的工作效率，又怎能让市民能够对食品安全有信心？
3. Third, China's high rate of investment has masked the fact that investment returns have been declining because capital is allocated inefficiently.
第三，中国的高投资率掩盖了这样一个事实：由于资本配置效率低下，投资回报率不断下滑。

英英解释

adv.
  1. in an inefficient manner

网络释义

inefficiently
无效率地; 无结果;