This error says that there's a problem in line 12, but the line only has a fi completing the if statement.

错误消息指出问题出现在第12行上，但是这一行只有一个用来结束if语句的fi。

youdao

There was a column directly in my line of sight, so I could only see half the stage.

有一根柱子正挡着我的视线，所以我只能看见舞台的一半。

《牛津词典》

If the horizontal line drawn is aligned with a polygon vertex, then only the segments that are below the line are counted.

如果所绘制的水平线与一个多边形顶点对齐，那么只计算位于该线下方的部分。

youdao

She appeared in only one movie. And she had only one line to speak in that.

VOA: special.2009.12.06

It's this extraordinary insight that he gives us: we can only read one word at a time, we can only read one line at a time.

这是他告诉我们的非凡的洞察：,我们一次只能读一个词，或是一行。

耶鲁公开课 - 弥尔顿课程节选

Somewhere along the line in one damn incarnation or another, if you like, you not only had a hankering to be an actor or an actress, but to be a good one. You're stuck with it now.

在线路的某个地方，在化身或其他东西里，如果你想要，你不仅能渴望成为一个演员,也能成为一个出色的演员，你想现在是被困住了。

耶鲁公开课 - 1945年后的美国小说课程节选

On far too many occasions they broke the gain line only to find there was no support.

BBC: Jeremy Guscott column

Since late 2011, CPI has embarked on a volatile path, bouncing off the flat line only to fall below it twice.

FORBES: Deflationary PPI Questions Effectiveness Of Bernanke's QE

The entrepreneurs delivered a full spring line only in 2003.

FORBES: Magazine Article