Downline
adv. 沿下行(铁路)线
🗣️ 情景例句
Not on our anniversary.
可不能在我们的结婚纪念日。
I didn't know whether to send the letter airmail or not.
我不知道是否送航空邮件。
I prefer horse riding to shooting.
骑马和射击相比，我更喜欢骑马。