希腊人之专注于几何迷糊了后世好几代人的视界.The Greek concentration on geometry blurred the vision of later generations.黑洞密度高, 但是它们的视界阻碍了观测.Black holes are dense, but their event horizons preclude observations.视界里拉出 长线 模糊的白色光点. 又昰什庅?Arc of vi...
他的祖父和外公都热衷于演说。Both his grandfathers were fired with an enthusiasm for public speaking.这所大学不让迪克·格雷戈里在校园里发表演说。The university refused to let Dick Gregory speak on campus.他的演说很难听懂，他的签名颤颤巍巍地无法识别。His speech was difficult to un...