对于浓郁的雨的英语表达，有很多可能的选择，例如：

heavy rain
intense rain
thick rain
driving rain

其中，heavy rain 是最常见的说法，例如：

The sky was overcast and it was raining heavily. 天空阴沉，下着浓郁的雨。
We had to cancel the picnic because of the heavy rain. 由于浓郁的雨，我们不得不取消野餐。

Intense rain 表示雨水很大，很强烈，例如：

The intense rain made it impossible to see more than a few feet in front of us. 浓郁的雨让我们看不清距离我们几英尺以外的东西。
The storm was so intense that we had to take shelter in a nearby building. 暴风雨太猛了，我们不得不在附近的一幢建筑里躲避。

Thick rain 表示雨水很浓厚，例如：

The air was filled with a thick mist of rain. 空气中弥漫着浓厚的雨雾。
The trees were bending under the weight of the thick rain. 树木在浓厚的雨水的重压下弯曲。

Driving rain 是另一种常见的说法，表示雨水非常大，很有力，例如：

The wind was blowing so hard that the driving rain was hitting us pke needles. 风力非常大，浓郁的雨就像针一样扎着我们。
We could barely see the road ahead of us through the driving rain. 在浓郁的雨中，我们几乎看不清前面的路。

总的来说，浓郁的雨的英文表达有很多种可能，选择哪一种具体的说法取决于你想要表达的意思和上下文。