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
I need to make an appointment with you tonight.
我想今晚约你。
You've got an express mail.
你有特快专递。
Oh! Do you have to?
噢！必须收拾吗？