abbr.和的平方根（root-sum square）；英国皇家学会会员（Regiae Societatis Socius，等于 Fellow of the Royal Society）；残差平方和（residual sum of squares）；简易信息聚合（really simple syndication）；网站聚合内容摘要（Rich Site Summary）
The characters entered were 's — e-c-r-3-t with a new twist: the s key was held down until after the last key in the password was pressed and released.
用新的方法输入的字符是' s——e - c - r - 3 - t：按住s键，直至按下并释放了密码中的最后一个键之后。