unnecessarily 

英汉解释

adv. 不必要地；多余地

参考例句

1. Some parents worry unnecessarily about their children.
有些父母不必要地为孩子担心。
2. Thus, there is a duplication of effort that lengthens the process and increases costs unnecessarily.
因此，这是一种延长诉讼过程和增加不必要费用的无用的努力。
3. Our way, hoping is unnecessarily starting, and desperation is also unnecessarily ending, just only too early.
我和你的路，期待不一定会开始，绝望也未必结束，只是过早了。

英英解释

adv.
  1. in an unnecessary manner
  2. without any necessity

网络释义

unnecessarily
不必要地; 未必; 不需地; 多余;
UNNECESSARILY JUDGMENT
未被审判;
worry unnecessarily
过虑;
needlessly unnecessarily
不必要地;
Take it seriously unnecessarily
不必当真;