1. The temperature in the room dropped imperceptively, but enough to make me shiver.
A temperatura na sala diminuiu imperceptivelmente, mas o suficiente para me fazer tremer.

2. She imperceptively raised her eyebrows in surprise at the unexpected news.
Ela levantou imperceptivelmente as sobrancelhas em surpresa com a notícia inesperada.

3. The colors of the sunset changed imperceptively as the evening wore on.
As cores do pôr do sol mudaram imperceptivelmente à medida que a noite avançava.

4. He imperceptively shifted his weight from one foot to the other as he waited in line.
Ele mudou imperceptivelmente o peso de um pé para o outro enquanto esperava na fila.

5. The sound of the approaching footsteps grew imperceptively louder as they neared.
O som dos passos se aproximando ficava imperceptivelmente mais alto à medida que se aproximavam.

6. The clock's ticking became imperceptively slower as the batteries started to die.
O tic-tac do relógio ficou imperceptivelmente mais lento à medida que as pilhas começaram a acabar.