常見(jiàn)例句雙語(yǔ)例句Anti-de sitter space, although it is infinite, has a "boundary, " located out at infinity.反德西特空間雖然無(wú)窮大，卻有個(gè)位于無(wú)窮遠(yuǎn)的“邊界”。 返回 space at infinity