h'm
hem 或 hum 的缩写（感叹词）
例句
The Badger trotted forward a pace or two; then grunted, "H'm!"
獾向前小跑了一两步，然后哼了一声：“嗯！”
He merely said, "H'm", and went away.
他嗯了一声，就走了。
《新英汉大辞典》
He shook his head with a subdued "h'm."
他摇晃着头低沉地哼了一声。
