"sign onto" in Chinese (Simplified)
登录加入签署（协议）
Definition
通过输入用户名和密码进入系统或在线平台；也指正式同意加入或支持某个项目、团体或事业。
Usage Notes (Chinese (Simplified))
“Sign onto”可用于表示登录网络系统，也可表示正式同意或支持。单纯登录时常用 'sign in' 或 'log in'。语气中性。
Examples
You need to sign onto the website to see your account.
你需要**登录**网站才能查看你的账户。
She didn't want to sign onto the new project at work.
她不想**加入**公司里的新项目。
Please sign onto your email before sending the document.
请在发送文件前先**登录**你的邮箱。
I forgot my password and now I can't sign onto my account.
我忘记了密码，现在无法**登录**我的账户。
Several experts have decided to sign onto the climate change campaign.
几位专家决定**加入**气候变化宣传活动。
Once you sign onto the system, you'll have full access to the tools.
一旦你**登录**系统，就可以完全访问所有工具。