- 談到……時；涉及……時While we are on the subject of money, may I ask when you will repay the loan?
既然我們談到了錢的問題，可不可以問一下你將何時償還這筆貸款？
辨析
同義參見:
over
on the subject of
窗口將在 5秒后自動關閉.