1. In many ways, this is unfortunate for the poor actors who are required to go on repeating the same lines night after night.
    这样一来，可怜的演员们可倒霉了。因为他们需要一夜连着一夜地重复同样的台词。

2. I read a few lines, but I did not understand a word.
    我读了几行，但一个字也不懂。

3. If an earthquake happens in a large city, many of the telephone lines within the city are likely to be down.
    地震若发生在大城市，市里的许多电话线路很可能中断，

4. It's cheaper to build radio towers than to string lines across mountain ridges,
    建造无线电发射塔要比翻山越岭架设线路更便宜。