The company’s tech comes from an unusual source: a $100-million-endowed program at Caltech to develop orbital solar plants that would beam electricity to Earth below. The researchers ultimately settled on a sail-like structure that is thin and flexible compared to boxy, traditional satellites.
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Медведев вышел в финал турнира в Дубае17:59
from typing import List, Tuple, Dict, Any, Optional
if (low = high) return; // 子数组长度<=1