Of those "principally involved" the Soviet Union must, of course, be one.
这些“最主要的”苏联是不可少的，当然，其中一个。
Lotus is principally involved in the manufacture and sale of high performance sports cars and the provision of automotive engineering consultancy services.
莲花集团的主营业务是生产和销售高端运动型跑车并提供世界一流的汽车工程咨询服务。
It was practiced principally by Orientals and did not gain much popularity among Americans because, as in all things Oriental it involved a tedious amount of practice and a great deal of patience.
它主要由东方人练习，在美国人中未能大众化，这是由于它和其它的东方技艺一样，需要大量单调的训练和极大的耐心。
It was practiced principally by Orientals and did not gain much popularity among Americans because, as in all things Oriental it involved a tedious amount of practice and a great deal of patience.
它主要由东方人练习，在美国人中未能大众化，这是由于它和其它的东方技艺一样，需要大量单调的训练和极大的耐心。
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