slyly
from under the brows
Он посмотрел на неё исподлобья.
He looked at her from under his brows.
Она ответила, глядя исподлобья и хмурясь.
She replied while looking at him from under her brows and frowning.
Мальчик молча глядел исподлобья на учителя.
The boy silently glared at the teacher from under his brows.
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