These technologies will help us become better stewards of the environment - and they will help us to confront the serious challenge of global climate change.
这些技术将帮助我们成为环境的更好的管理者——它们还将帮助我们应付全球气候变化的严峻挑战。
But the mobile communication environment regarding the traditional QAM modulation is the serious challenge, but in teaches in the character mobile communication system also to have USES QAM.
但是移动通信的环境对于传统的QAM调制是严重的挑战，不过在教字移动通信系统中也有使用QAM的。
But the mobile communication environment regarding the traditional QAM modulation is the serious challenge, but in teaches in the character mobile communication system also to have USES QAM.
但是移动通信的环境对于传统的QAM调制是严重的挑战，不过在教字移动通信系统中也有使用QAM的。
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