These sounds travel underwater until they encounter objects, then bounce back to their dolphin senders, revealing the location, size, and shape of their target.

这些声音在水下行进，直到遇到水下物体，然后返回到发出信号的海豚，显示出目标的位置，大小和形状。

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There is a bird, its shape like a crow, head patterns, white mouth, red legs, called Jingwei, it sounds like the call of their names.

有一种鸟，它的形状像乌鸦，头部有花纹，白色的嘴，红色的脚，名叫精卫，它的叫声像在呼唤自己的名字。

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She could see the shape of the sounds very clear and she would not forget them.

她能清楚地看见那些声音的形状，并牢牢铭记。

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There is also the "vocal tract" - everything upwards of the larynx along with the mouth, which are well known in humans to shape sung notes and subtle vowel sounds.

BBC: Helium-huffing gibbons 'sing with soprano technique'