“在无穷远处”常见的英语表达是 “at infinity” 或 “in the infinite (distance)” 。其中“at infinity”更为常用和简洁,在数学、物理等专业语境中频繁出现。例如:
The function approaches zero as x goes to infinity.(当x趋近于无穷大时,函数值趋近于零。)
In projective geometry, parallel lines meet at infinity.(在射影几何中,平行线在无穷远处相交 。 )