Solitude can be a great vessel for this.

孤独可以是一个很好的容器。

Lastly, G is for great vessels which includes the superior vena cava, inferior vena cava, ascending aorta, aortic arch, pulmonary artery, and descending aorta.

最后，G指大血管" Great vessels" ，包括了上腔静脉、下腔静脉、升主动脉、主动脉弓、肺动脉与降主动脉。

Because active participation in the world and the human relationships that come from that are great vessels to joy, happiness and fulfillment although for a loner, it can be a huge struggle.

因为入世和由此产生的人际关系是快乐、幸福和满足的伟大容器，尽管对于一个孤独的人来说，这可能是一场巨大的斗争。