请计算文中的正式用语比例用百分数表示。Current research offers mixed indications of children’s perceptions of robots as animate or machine Children aged 3-5 have a piecemeal understanding of animacy in their beliefs conc

正式用语：Current research, indications, perceptions, animacy, beliefs, attribution, agency, biology, classification, pictures, humanoid robots, HRI work, evaluate, stuffed dog toy, factors, influencing, remain to be uncovered。

共计19个正式用语。

比例为：19/104 ≈ 18.27%。