释义
n. 船桅，旗杆，天线塔，风洞研究用磁性环流激波管
例句
1. Flags were at half mast everywhere on the day of the president's funeral. 总统葬礼那天，全国到处降半旗致哀。 2. The tall man always wore his trousers at half mast. 那高个子老是穿着一条长不及踝的裤子。