mast

桅杆英释nna tall pole on which the sails or flags on a ship are hung

1 mast cell,肥大细胞；柱状细胞

2 at half mast,◎下半旗(志哀)

3 before the mast,◎在前桅的前部分，在艏；在艏楼

4 half mast,vt. 下半旗

5 guyed mast,拉线式电杆

1 真题例句...the World Economic Forum ranked Sweden as the world's third mast competitive economy; the United States came in fifth...第一套CET62014.6阅读理解