Ascertained
v. 确定（ascertain的过去式）；查明
🗣️ 情景例句
She sounds upset.
她听起来有点不对劲。
I can't promise anything,but I'll do my best.
不敢保证，不过我尽力而为。
This is to help you start your school.
这是帮助你开办学校用的。