visual estimation的用法和樣例：
例句
- There are differences between actual measurement and visual inspection, so we shouldn't make judgments based on the data from visual inspections.
實測和目測是有差距的，我們不應根據目測的數據來作判斷。 - The names of the various lunar formations and lunar landscapes mostly date back to the early history of visual lunar observation.
各種月面結構物和地形的名稱，大都起源於月球目測觀測史的早期。
