单语范例（未经PONS编辑处理）
He also became proficient in piloting flying boats.
en.wikipedia.org A proficient student in mathematics and science, she once considered a career as a physician.
en.wikipedia.org Kay is proficient in many alien languages and has knowledge of alien customs and rituals.
en.wikipedia.org She is a proficient crest sorceress, but is limited by her obsession with the monetary value of the crest.
en.wikipedia.org He developed his own style within genre painting, and became proficient in portrait painting.
en.wikipedia.org