Ug
abbr. 地下（underground）
🗣️ 情景例句
He devoted his life to promoting world peace.
他一生致力于促进世界和平。
Has this seat number started boarding?
这个座位号已开始登机了吗？
The world had to wait almost another 100 years for the Channel Tunnel.
世界不得不再等将近100年才看到海峡隧道竣工。