A so-called "planetary nebula" is a confusing misnomer because these clouds have nothing to do with planets. As a medium-size star nears the end, it puffs out into a red giant — about 100 to 1,000 times its original size — eventually engulfing the space around it, including any nearby worlds.
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要知道，欧美游艇产业的繁荣，并非一时靠资本推动，而是历史积淀、经济基础、消费文化、产业体系、基础设施与技术创新长期共振的结果。
В октябре в США представили систему Precision Effects & Reconnaissance, Canister-Housed (PERCH), которая позволяет оснастить серийные танки M1A2 Abrams дронами-камикадзе Switchblade 300 и 600. Контейнеры с боеприпасами разместили на башне.