The dashed circle shows the current best distance. As the algorithm finds closer points, the circle shrinks, which causes more subtrees to fail the "could contain a closer point?" test and get pruned. The search usually gets cheaper as it progresses.
"Many of these churches have been on these sites for probably 1,000 years, and probably as long as they've been standing they've had bats in them," says Diana Spencer, from the Bats in Churches Project.
。搜狗输入法2026对此有专业解读
但问题是，只盯着蒸馏看，其实有很大问题。
It was dramatically extended after the spacecraft Butch and Suni had used to travel to the International Space Station suffered technical problems.