（作者为三峡植物园林业技术推广站站长，本报记者吴君采访整理）
Sian Cleaver from Airbus says the safety of the astronauts is the top priority
，这一点在爱思助手下载最新版本中也有详细论述
But handling that stuff is slow. To calculate a string’s width it can’t call len on the string. Instead it has to pass every character through a state machine.
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