Mainsail
n. 大桅的帆, 主帆
📖 牛津释义
mainsail
n
principalsail on a sailing-ship, usu attached to the mainmast （主桅上的）主帆. =>illus at yacht 见yacht插图.
🗣️ 情景例句
He's cheating on his wife.
他对妻子不忠。
Did everyone you invited show up?
你邀请的人都来了吗？
Oh, I'm sorry to hear that.
噢，真遗憾。