Dialing distances will be extended and busy lines will no longer be a problem.

通话距离将会延长，占线不再成为问题。

youdao

Presently, 16 and 32 channels DWDM equipment has been adopted on several busy lines in the eastern-coast economic dynamic area of China.

目前，16和32通道DWDM设备已经在我国东部沿海发达地区多条业务繁忙线路上投入运行。

youdao

Ingrid was busy learning her lines for the next day's shooting.

英格里德正忙着背第二天拍摄的台词。

《柯林斯英汉双解大词典》

Orders for commercial airplanes are expected to be lower this year, as airlines cope with an expected America's Boeing executives in Dubai put on a brave face, saying that fulfilling back orders will keep their production lines busy.

VOA: standard.2009.11.15

And while some are busy commuter lines, others are off-the-beaten-track gems that are well-worth connecting to.

BBC: Majestic Canada, coast to coast

In North America the assembly lines are busy, but cheap imports push down prices.

ECONOMIST: Mercedes goes to Motown

If the lines are busy, an answerphone message tells children to keep redialling.

BBC: NI Childline 'in need of funds'