January faded imperceptibly into February, with no change in the bitterly cold weather.

一月份觉地变成了二月份，寒冷的天气却没有变。

She nodded almost imperceptibly and then opened her mouth, but Snape forestalled her.

她乎易察觉地点了点头，张开嘴想说话，但斯内普抢先阻止了她。

She shook her head almost imperceptibly, then resumed her own deadpan stare at the opposite wall.

她令人无法察觉地摇了摇头，然后又继续面无表情地盯向对面的墙了。

Imperceptibly I became conscious of a change in Biddy, however.

然而，我觉地意识到了比迪的变化。