Something having four parts , units , or members , such as a musical quartet or a four - cylinder engine.
四个一组之物:四个(人或物)一组, 如音乐四重奏,四缸发动机等.
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The displacement of the A 8's four - cylinder engine remains unknown, but power is pegged at 230 horsepower.
位移的奥迪A8的四缸发动机仍然不明, 但权力是固定在230马力.
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