Blueback
非英国海军部出版的海图(背面为蓝色的)
🗣️ 情景例句
It's beautiful.
它很漂亮。
I've got a hostage.
我捉到一名人质。
He started to complain about this wicked world but was interrupted by a knock at the door.
他开始抱怨起这个邪恶的世道来，却被一阵敲门声打断了。