Definition: very easy to understand Level: C2
她明确表示她负责。
She made it ___crystal ___clear that she was in charge.
很明显，他们需要你的一些帮助来发展他们的能力。
It is ___crystal ___clear that they need some help from you to develop their abilities.
解释非常清晰，没有留下任何困惑的余地。
The explanation was ___crystal ___clear, leaving no room for confusion.
