Bipinnatisect
二回羽状全裂的
🗣️ 情景例句
What's the problem?
什么问题？
This is not an occasion for laguhter.
现在不是该笑的时候。
it was not long before its use as the uniquely recognizable broadcasting frequency for interstellar communication was suggested.
提出把它作为星际间唯一可辨认的广播频率就为期不远了。