1. double bass This passage could be performed by three bass viols or even a double bass. 这一段可以用三部古低音提琴或者低音提琴来演奏。
2. Complementary freshwater fishes Diadromous and vicarious freshwater fishes which have become dominant because of the absence of primary or secondary freshwater fishes. 补充的淡水鱼因缺乏初级及次级淡水鱼，以至于河海洄游型鱼类成为该地区的优势淡水鱼种。
3. With the bass plugs mounted in the bass reflex ports, the cabinet is closed and the loudspeaker operates as a closed construction. 将低音插头接入低音反射端口，可以将音箱设置为密闭式音箱，使其像密闭式音箱一样工作。
4. With the bass plugs mounted in the bass reflex ports, the cabinet is closed and the loudspeaker operates as a closed construction. 将低音插头接入低音反射端口，可以将音箱设置为密闭式音箱，使其像密闭式音箱一样工作。
5. They exist in four sizes: treble, tenor, bass, and double bass (violone). 有四种型号：高音、次中音、低音和双低音（低音提琴）。
