这些光线构成一个波浪的形状。

These lights form a ___wave shape.

巨大的海浪向他涌来。

A huge ___wave is approaching him.

他站在门口向我们挥手道别。

He stood at the door and ___waved goodbye to us.

新产品的发布在社交媒体上引发了一波热烈的讨论。

The launch of the new product triggered a ___wave of heated discussions on social media.