They checked the accuracyof the map by testing 200 hair samples collected from 65 barber shops.
他妈呢从65家理发店中收集了200份头发样品，用以测试该地图的准确性。
2
Until about 20 years ago the first was answered by a map and compass, and accuracy depended on the competency of the user.
直到大约20年前第一由地图和指南针回答，并且准确性取决于用户的能力。
3
Placebase layers on top of raw map-data would abstract a new underlying service so that users may not even notice it (unless, of course, there are performance, accuracy or capability issues).