在侦探故事中，福尔摩斯的得力助手华生医生总是陪伴在他身边。

In the detective stories, Dr. Watson is Sherlock Holmes' faithful ___sidekick who always accompanies him.

我的狗不仅是宠物，也是我每日散步时的忠实伙伴。

My dog is not just a pet, but also my loyal ___sidekick during daily walks.