on the line
US /ɑn ðə laɪn/
UK /ɑn ðə laɪn/

1.
岌岌可危, 處於危險之中
at risk; in a position where one might lose something important
:
•
His reputation is on the line with this new project.
他的聲譽因這個新項目而岌岌可危。
•
Many jobs are on the line if the company fails.
如果公司失敗,許多工作都岌岌可危。
2.
在電話上, 正在通話
on the telephone
:
•
I have Mr. Johnson on the line for you.
約翰遜先生正在電話上找您。
•
Please hold, I have another call on the line.
請稍等,我還有另一個電話在通話中。