mast|masts

这艘船的桅杆很高。

This boat has a very tall ___mast.

船上的桅杆高高竖起，支撑着巨大的风帆。

The ship's ___masts stood tall, supporting the large sails.

水手们爬上船的桅杆调整船帆。

The sailors climbed up the ship's ___masts to adjust the sails.