unintelligible

adj.难解的,无法了解的,莫明其妙的

难以理解的；费解的；不清楚的；

形容词；

1、The noise made his words unintelligible.

噪音使得他的话难以理解。

2、The professor's lecture was so filled with jargon that it was completely unintelligible to most of the students.

教授的讲座充斥着专业术语，对大多数学生来说完全难以理解。