With a thousand points, you barely notice the delay. With a million, you're doing a million distance calculations for every single query. On a phone updating the map as the user scrolls, that's untenable.
; fire privilege test
，这一点在快连下载安装中也有详细论述
They've found what appears to be a small building and have unearthed domestic and decorative artefacts, including exquisite coloured glass beads.
组织未成年人从事第一款活动的，从重处罚。