“The tumors that we treat are always moving targets,” he says. “That’s particularly true in the lung, where because of breathing motion, the tumors are constantly moving.”
Andreas Branch/Patrick McMullan via Getty Images，这一点在新收录的资料中也有详细论述
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Number: All the pips in this space must add up to the number.
One farmer in Somerset told the BBC that he was living on a "knife edge" as his crops were days away from rotting in the floodwater.，这一点在新收录的资料中也有详细论述