集体表演称之为二重唱 、 三重唱 、 四重唱以及大合唱等等.Groups are called duets, trios, quartets , choruses , choirs, etc.他加入了理发店四重唱.He joined a barbershop quartet.那个四重唱[四重奏](节目)也很不错.The quartette was not half bad , either....
我觉得你最好买个蒸汽的消毒器.I think it's better to buy a steam sterilizer.拐杖, 壁挂式动态空气消毒器KT-B60还哟偶其他规格.Crutches, wall - mounted air sterilizer dynamic KT - B 60 also dual yo other specifications.采用示踪实验研究紫外线消毒器的水力特性.Hydraulic char...