Already have an account? <a { $sign_in } class="{ $class_name }">Sign In</a> or <a href="{ $learn_more }">learn more</a> about joining { -brand-name-mozilla }.
已有账户？<a { $sign_in } class="{ $class_name }">在此登录</a>或<a href="{ $learn_more }">详细了解</a>关于加入 { -brand-name-mozilla } 的行列。