signal flag
美
英 
英汉解释
例句
In fact, the third signal flag (from left to right as you face the front door) does not exist in international nautical code.
事实上,第三面信号旗(当你面朝蟹堡王时从左到右数)在国际航海代码中并不存在。
A fox uses its tail (or "brush" ) as a warm cover in cold weather and as a signal flag to communicate with other foxes.
狐狸用它的尾巴(或“毛刷”)在冷天时盖上保暖,同其他狐狸交流时亦可用来做信号旗。