keening

例句：

1. 1. 清醒；觉醒；2.
   动物的
2. 3.
   人的
3. 4.
   精神的
4. 5.
   声音的
5. 1. The patient's keening sense of hearing helped him to find his way back to the hospital.
   病人敏锐的听觉帮助他找到了回家的路。
6. 2. The scientist was deeply keening to discover a new drug for cancer treatment.
   这位科学家渴望发现一种治疗癌症的新药物。
7. 3. The keening sound of the waves crashing against the shore filled the air with excitement.
   海浪拍打岸边的清晰声响充满了空气，让人兴奋不已。