求翻译：②受收视环境的影响大，不易把握传播效果。电视机需要一个适当的收视环境，离开了这个环境，也就根本阻断了电视媒介的传播，在这个环境内，观众的多少、距离电视机屏幕的远近、观众的角度以及电视音量的大小、器材质量以至电视机天线接受信号的功能如何，都直接影响着电视广告的收视效果。是什么意思？

② the viewing environment, which is difficult to grasp the effect of the spread. TV needs a proper viewing environment, to leave this environment, they did not block the spread of television media, in this environment, how much of the audience, the distance from the TV screen, the audience's point o

2 the impact of the visual environment is not easy to grasp, and the results. TV needs to be an appropriate depending on the ambient, and without this environment, it is simply blocked by the television media in the dissemination of this environment, the size of the audience, and how much of the nea