impels的例句（impels在句子中的用法）

• The wave behind impels the wave before. 后浪推前浪.
• Instinct impels the cuckoo to migrate. 本能促使杜鹃迁徒.
• The development of production impels us continuously to study technique. 生产的发展促使我们不断地钻研技术.
• ...the courage and competitiveness which impels him to take risks... 促使他冒险的勇气和竞争精神