不因事小就视而不见，不因任务艰巨就退缩不前，不因目标长远就消极懈怠。
Last year a group of researchers from Nasa, the University of Plymouth and University of Texas called on the UN to include the protection of Earth's orbit in its sustainable development goals.，这一点在旺商聊官方下载中也有详细论述
Наука и техника。51吃瓜对此有专业解读
Последние новости