ACSL美国计算机科学思维挑战活动 ，原名美国计算机科学联赛，最初成立于1978年，起源于美国硅谷，最初名为the Rhode Island Computer Science League，后为the New England Computer ...

U.S. President Donald Trump and his Democratic opponents appeared to make little progress at a White House meeting aimed at heading off a government shutdown that could disrupt a wide range of ...

Conservation is facing a convergence of crises: accelerating ecological decline, weakened institutions, disinformation-fueled ...