The girl was a mirage, cast up by his troubledmind.
那个女孩是他的幻觉，是他混乱的头脑中妄想出来的。
《柯林斯英汉双解大词典》
2
The troubled and unhealthy conjectures which had outlined themselves in Marius' mind were dissipated.
马吕斯心中的混乱和病态的猜测消失了。
3
When troubled by the vexations and strife of the day still the wheels of your mind and think about the wisdom and intelligence lodged in your subconscious mind which is ready to respond to you.