Given a sentence in Chinese, provide an equivalent paraphrased version from the original that retains the same meaning.

Example input: 1975年的NBA赛季 -  76赛季是全美篮球协会的第30个赛季。
Example output: 1975-76赛季的全国篮球协会是NBA的第30个赛季。
Example explanation: The paraphrase of the original sentence in Chinese is correct and accurate because even though sentence order has been changed, the denotion that the 30th season of the NBA occurred in the years 1975 - 1976 is retained.
Q: 还有58架联络机，但其中20架仅用于信使。
A:
还有58架连接飞机，但其中20架仅用于信使。