1. He incautiously blurted out the secret to everyone in the room.
他不小心地向在场的每个人泄露了这个秘密。
2. She incautiously crossed the road without looking left and right.
她轻率地没有左右看，就穿过了马路。
3. The hiker incautiously ventured off the marked trail and got lost in the wilderness.
这名徒步旅行者不谨慎地走出了标记好的小径，迷失在了荒野中。