Labels surface when you will find a lot less than four hundred plane on map. The next to fourth row will surface only if the map is zoomed in. ตรวจสอบให้แน่ใจว่าคุณเข้าใจกฎอย่างสมบูรณ์ Labels seem when there are actually lower than 400 plane on map. The 2nd to fourth row will show up https://adirectoryplace.com/listings12592823/%E0%B8%9A%E0%B8%B2%E0%B8%84%E0%B8%B2%E0%B8%A3-%E0%B8%B2%E0%B8%AD%E0%B8%AD%E0%B8%99%E0%B9%84%E0%B8%A5%E0%B8%99-for-dummies