masto-

例句：

1. 1. The mast of theship was damaged in the storm.
   风暴中船的桅杆受损了。
2. 2. The mastis used to support the sails ona boat.
   桅杆用于支撑船上的帆。
3. 3.The mast reached up towards the sky, reaching for the stars.
   桅杆高高地伸向天空，向着星星。