哈雷彗星每隔76年就会靠近太阳一次，形成一条壮观的发光尾巴。

Halley's ___comet approaches the sun every 76 years, developing a spectacular glowing tail.

他的才华如同彗星般闪耀却短暂。

His talent was like a ___comet — dazzling but short-lived.