守卫停止了哼唱，猛地转过头。The guard stopped his humming and turned his head sharply.那天晚上晚些时候，刘易斯开始哼唱另一首斯普林斯汀的歌曲。Later in the evening, Lewis began to croon another Springsteen song.她轻声哼唱了一支摇篮曲。She gently crooned a lullaby....

“哼唱”的英语可以翻译为：hum，[电影]Humming...