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1·I hum a tune in the bath.

在浴室里哼唱歌曲。

2·He began to hum a tune.

他开始哼着曲子。

3·You could catch a ball, hum a tune, stop at a red light - act exactly like a person but without any sense of what it is like to be alive.

你可以接住一个球，哼个小曲并可以在红灯前停下来—看起来就像所有有感觉的人一样，而事实上你的身体又没有任何感觉。

4·I can hum a sunny tune with you...... and play follow-the-leader, too!

我还能给你哼出一首好听的歌……我还能玩模仿游戏。

5·I forgot my own mean existence and felt like singing and skipping as merrily as my fellow men. Inadvertently, I began to hum a long-forgotten tune from some Peking Opera.

我忘记了我自家的存在，也想和我的同胞一样的欢歌欣舞起来，我的嘴里便不知不觉的唱起几句久忘了的京调来了。