"unguarded" in Chinese (Simplified)
无人看守的毫无防备的
Definition
没有受到保护或看守；也可以指一个人在说话或做事时不加小心，容易流露真实情感或想法。
Usage Notes (Chinese (Simplified))
既用于物理上无人看守、无保护的地方，也用于形容人在无意间流露真情或说话随意（如 'unguarded moment', 'unguarded comment'）。通常是非正式用语。
Examples
The house was left unguarded all night.
房子整晚都**无人看守**。
He made an unguarded comment in the meeting.
他在会议中说了一句**毫无防备**的话。
Don’t leave your bag unguarded at the airport.
不要在机场把包**无人看守**地放着。
In an unguarded moment, she admitted her fears.
在一个**毫无防备**的瞬间，她承认了自己的恐惧。
His answer was so unguarded that everyone was surprised.
他的回答太**毫无防备**了，大家都很惊讶。
The conversation turned personal, and he got a bit unguarded.
谈话变得私密，他有点儿**毫无防备**。