compoundn.化合物；复合词；复合物n.院子(用围墙圈起来的场地）adj.化合的；【语】（词语等）复合的；【植】复合的；【动】群体的vt.混合；调合；使严重；私了；【经】以复利计算vi.妥协compound cam组合凸轮

1. They were both caught up in a whirling vortex of emotion.
   他们俩人都陷入了感情的旋涡。
2. Research on Dilute Parti-cles Motion in Secondary Vortex Flow.
   旋涡二次流中稀疏颗粒的运动特性研究。