doerKK [dur] /duɹ/發音名詞1實幹家、行動派She's a doer, not someone who just talks about plans.她是個行動派,不是只會空談計畫的人。2做…的人、行為者正式The law punishes the doer of the crime, not his family.法律懲罰的是犯罪行為人,而不是他的家人。