adv.极微地；微细地；察觉不到地

The temperature dropped imperceptibly throughout the day.
一整天温度几乎察觉不出地在下降。
The sun set imperceptibly, painting the sky with hues of orange and pink.
太阳 imperceptibly 落下，在天空中涂抹出橙色和粉红色的色彩。
The music faded imperceptibly into the background noise.
音乐 imperceptibly 淹没在背景噪音中。
Her confidence grew imperceptibly with each successful project.
随着每一个成功的项目，她的信心 imperceptibly 增长。
The baby's smile broadened imperceptibly at the sight of its mother.
看到妈妈时，婴儿的笑容 imperceptibly 更加灿烂了。
The scent of flowers imperceptibly filled the room as the windows were opened.
打开窗户后，花香 imperceptibly 充满了整个房间。
The politician's popularity waned imperceptibly over time.
随着时间推移，这位政治家的受欢迎程度 imperceptibly 减少。
The colors of the sunset changed imperceptibly, creating a breathtaking display.
日落的颜色 imperceptibly 变化，形成了一幅令人叹为观止的景象。
The teacher lowered her voice imperceptibly to maintain classroom discipline.
为了维持课堂纪律，老师 imperceptibly 降低了声音。
The thief moved imperceptibly through the shadows, avoiding detection.
窃贼 imperceptibly 在阴影中移动，以避开被发现。