N-COUNT
同伴;伴侶;同行者
A companion is someone who you spend time with or who you are travelling with.
例句
Fred had been her constant companion for the last six years of her life...
在她生命的最后6年，弗萊德一直是她忠實(shí)的伴侶。
I asked my travelling companion what he thought of the situation in Algeria.
我問(wèn)我的驢友對(duì)阿爾及利亞的形勢(shì)有什么看法。