Mbone
[计] 多路广播主干网
🗣️ 情景例句
Maybe we should do it again.
也许我们该再来一次。
Keeping is harder than winning.
创业不易，守业更难。
Two factors weigh heavily against the effectiveness of scientific research in industry.
两个因素严重地影响工业里科学研究的效果：