They were the bassnote in the triumvirate of receptacles which awaited visitors in every conference room: spittoons, porcelain-lidded tea cups, and ashtrays.
当时每个会议室必备的迎宾三件套就是：痰盂、带盖的茶杯和烟灰缸。
2
Changes in the bass or lowest note of a chord affect its nature, but higher notes may be displaced without affecting the nature of the original chord.
和弦中低音或最低音的改变影响其性质，但是替换稍高的音则不会影响原和弦的性质。
3
You can sometimes hear it if you listen carefully to a recording of a bass solo, where each note is accompanied by a "PFFT" sound that disappears between the notes.