英语语法分析

This is first time the meaning of the headbutt has been clear.

这是第一次弄清楚用头碰撞的含义。

HONEYBEES headbutt their hive mates to warn them of danger at a food source.

蜜蜂用头碰撞它们的蜂巢伙伴，向它们警告食物源处的危险。

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。