companion

He spent his retirement years with a loyal golden retriever as his constant companion.

(Chinese) 他退休后带着一只忠诚的金毛寻回犬作为他常伴左右的伙伴。

For the long train journey across Siberia, she sought a traveling companion to share expenses.

(Chinese) 为了穿越西伯利亚的漫长火车旅行，她寻找了一位旅行同伴来分摊费用。