诸如此类的事情在户外玩的时候，会时刻盯着她，根据情况引导她。
Readers respond to an interview with Beth Gardiner on how the oil industry is pumping billions more into plastics
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"We have soft robots powered by air that can walk on land and then walk into water – we don't have to worry about what happens when things get wet," he explains. In one case, a six-legged robot devoid of electronics moves its legs to walk when air is pumped in and out of a tube.
The algorithm walks the tree recursively. At each node, it checks: does this node's bounding box overlap with the query rectangle? If not, the entire subtree gets pruned (skipped). If it does overlap, it tests the node's points against the query and recurses into the children.
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Our digitised version of the FT newspaper, for easy reading on any device.
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