voiceless consonants,

预订 voice to the voiceless [9786203576580]
【中商海外直订】the voiceless dream
预订 the voice of the voiceless
预订 voiceless whispers: tuning into natu. [9781504325073]
stops/plosives (塞音) [p] [b] [t] [d] [k] [g] [t] voiceless