现在纪录片或专题类节目仍然有很多是以电视栏目化的播出方式存在,而这类栏目很多时候都是以主持人串场的形态来结构,其中以国外引进类节目或历史话题类节目为最多。一些栏目管理者认为,如果是国外引进节目,受栏目时长限制,要将其分切成几期或更多期节目,可这样每期节目看起来会不太完整,于是就会采用主持人在演播室讲述或评述方式为每期 Nowadays, there are still many documentary or thematic programs that are broadcast in the form of television programs. In most cases, such programs are structured in the style of a host. Among them, the introduction of foreign programs or historical topics most. Some program managers believe that if the introduction of programs abroad, subject to the length of time constraints, to be cut into several or more programs, so each program will look less complete, so the host will be used in Studio to tell or comment on the way for each period