Along with the headbutt, the signaller makes a brief "piping" sound, says Nieh.

随着用头碰撞，这些通讯兵发出短暂的“尖叫”声，聂说。

youdao

Along with the headbutt, the signaller makes a brief "piping" sound, says Nieh.

随着用头碰撞，这些通讯兵发出短暂的“尖叫”声，聂说。

youdao