adv.不知不觉，出其不意地，猝然，冷不防，不留神地，未注意到

They walked into the trap unawares, not suspecting any danger.
他们毫无察觉地走进了陷阱，没有意识到任何危险。
The thief entered the house unawares, thinking it was empty.
小偷悄无声息地进了房子，以为里面没人。
The bird perched on the branch unawares of the approaching predator.
鸟儿毫无察觉地栖息在树枝上，没注意到靠近的捕食者。
The spy infiltrated the organization unawares, blending in seamlessly.
那个间谍悄无声息地渗透进组织，完美地融入其中。
She overheard their conversation unawares, standing just behind the curtain.
她无意中听到了他们的谈话，就站在窗帘后面。
The child played by the river unawares of the rising tide.
孩子在河边玩耍，没有注意到潮水正在上涨。
He was caught in a blizzard unawares while hiking in the mountains.
他在山上徒步时，毫无准备地遭遇了暴风雪。
The insect landed on her shoulder unawares, causing a sudden shiver.
昆虫不经意间落在她的肩膀上，让她突然一颤。
The couple shared an intimate moment unawares of the watching eyes.
这对情侣在不知情的情况下共享了一个亲密的时刻，没注意到周围有人看着。
The sniper took aim at his target unawares from a distant rooftop.
狙击手从远处的屋顶瞄准了他的目标，对方毫不知情。