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NASA astronaut Mike Fincke has logged 549 days in space, with nine spacewalks totaling 48 hours and 37 minutes.
，更多细节参见夫子
“年龄越来越大，再等下去很困难。”刘成对南方周末记者说。他们找到国内一家代孕机构，对方承诺孩子出生后能顺利领到出生医学证明。
The capacity of each node (how many points it can hold before splitting) controls the shape of the tree. A low capacity means nodes split early, producing a deep tree with many small cells. A high capacity means nodes tolerate more points before splitting, producing a shallow tree with larger cells.