Definition: extremely clear Level: C1
湖水清澈见底，非常适合游泳。
The lake's water is ___crystal ___clear, perfect for swimming.
你会被浅海清澈的水所惊叹。
You will be amazed by the ___crystal ___clear water of the shallow sea.
她的解释非常清晰，不容置疑。
Her explanation was ___crystal ___clear, leaving no room for doubt.
