Blueback
非英国海军部出版的海图(背面为蓝色的)
🗣️ 情景例句
I know a friend who can get us free tickets.
我认识一个可以给我们弄到免费票的朋友。
Excuse me I couldn't tell you beforehand.
对不起我不能事先告诉你。
The cave led back into the rockface and the earth by the entrance was dry.
岩洞迂回延伸到岩面里，靠近洞口的土是干的。