to remove unwanted parts from a mix
удалить нежелательные части из смеси (udalit' nezhelatel'nye chasti iz smesi)
"We need to sift out duplicate entries in the list."
"Нам нужно сифтовать дублирующиеся записи в списке." (Nam nuzhno **sift out** dubliruyushchiesya zapisi v spiske.)
A larger group is stronger than an individual.
To be extremely anxious or tense.
to make a lot of progress or improvement
to feel grateful for good fortune
a short sleep during the day
to persuade someone to do something by being persistent