Some dances, such as traditional dance in 1 and ballet in 2, need a very high level of skill and training; others, such as the can-can, require a very high level of energy and physical fitness.
一些舞蹈，比如1中的传统舞蹈和2中的芭蕾舞， 需要高水平的训练技巧; 其他舞蹈，比如康康舞， 需要健康的身体和强劲的体能。