Alternatives exist, from seafloor vibration-producers to revamped air guns that produce less sound but equally good images.

还有至于其它比如从地下振动源入手或者翻修更新制作出更少声噪但画面质量不变的空气枪的勘探方式。

Imagine colors, textures, sounds, images, anything that gives you sensory pleasure.

想象颜色、纹理、声音、图像，以及任何能给您带来感官愉悦的事物。