Listening Comprehension (random)
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彩色电视 的 色彩 输出 主要 靠 彩色 显像管 的 作用 +
Cǎisè diànshì de sècǎi shūchū zhǔyào kào cǎisè xiǎnxiàngguǎn de zuòyòng。
The transmission of color in a color TV, relies on the function of its television picture tube.
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like: 色彩