bare是赤裸的，soul则是灵魂。bare one's soul 的意思是袒露心灵，向别人掏心掏肺，毫不保留地展露自己的内心世界。

【例句】
At first, it was hard for me to bare my soul.
开始时，我很难向别人袒露心灵。

Some of these people don't mind baring their souls. They like talking about their extreme tragedies and triumphs.
有些乘客一点不在意对陌生人掏心掏肺，特别愿意告诉别人自己生活里的大悲大喜之事。