gazed 凝视

examined 审查; 仔细检查

glanced 一瞥，浏览

viewed 观看；看待

observed 观察

peeked 偷看

stared 注视

watched 注视，观看

inspected 检查，视察

spied 看见，发现

studied 学习，研究

noticed 注意到，关注