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.