His intentions were transparent—he clearly wanted everyone's support.

transparent 的本义是"透明的"，引申为"显而易见的、一目了然的"。这个词由前缀 trans-（穿过）和词根 parent（显现）组成，字面意思是"能看穿的"，所以用来形容意图或行为非常明显、不加掩饰。