Unwilling to be caught up in the ancient astronaut craze , anthropologists have suggested that the tassili " roundheads " are merely ceremonial dancers or priests wearing empty gourds over their heads 由于不愿意染上古代宇航员的狂热，人类学家暗示泰斯利的“圆头人”仅仅是仪式上的舞蹈，或者是祭司把空葫芦戴在头上。
2.
The modern xylophone is also equipped with perpendicular resonators underneath the bars . the playing technique is similar to that of the glockenspiel , with roundhead mallets made in various degrees of hardness and resilience 它们像钢琴的黑白琴键那样排成两行，在每块木片下，装有开口的金属共鸣器，藉以增强声音的回响，使音量更大。
