secretly adv. 秘密地；背地里；

例句：

Drones can watch secretly on populations of animals in the wild, especially endangered ones.

无人机可以秘密观察野生动物的数量，特别是濒临灭绝的动物。

扩展资料

Secretly he'll freak out if you take him to Ruth's Chris, even just the one teeny time.

如果你带他去茹丝葵，他会私下里高兴得发疯的，就算你只带他去一次。

The other pirates envied him this majestic vice, and secretly resolved to acquire it shortly.

其他的海盗羡慕他这副威风凛然的样子，暗下决心不久就把它学会。

He became still more dissatisfied with it and secretly did everything in his power to obstruct it.

他对此更不满意，尽在暗里使绊子。