I can't get an outside line.

我接不通外线。

《牛津词典》

How do I get an outside line?

我怎么才能打外线？

youdao

Dial 9 for an outside line, and then the number you are calling.

打外线时先拨9，然后再拨电话号码。

youdao

The ego is the first line of defense between the self and the outside world.

VOA: special.2010.04.13

There's a phone in Buddy and Seymour's old room that is a private internal line, and it just goes from one room to another in the apartment; it's not an outside phone line.

在巴蒂和西莫的就房间里，有一台电话,有一个私人的内部线路，在公寓里的房间联通,不与外界相连。

耶鲁公开课 - 1945年后的美国小说课程节选

Outside at the head of the line, Luca and Andre Bucci of Hamilton, Ontario are almost to the door.

VOA: standard.2010.02.16

"It hit the outside line, " she told the chair umpire.

NPR: Sharapova Reaches 4th Round At French Open

Wilson appeared to have pushed outside the line and got the pad outside the line of off stump, but the umpire stuck to his guns even after the Irish batsman asked for a second review.

BBC: Cricket World Cup: Ireland captain reprimanded by ICC

Replays showed the ball striking the pad outside the line of off-stump but the Kenyans chose not to review the decision.

BBC: Cricket World Cup: New Zealand demolish Kenya