stay on top of
US /steɪ ɑn tɑp ʌv/
UK /steɪ ɑn tɑp ʌv/

成语
1.
了解, 掌握
to remain informed about something; to keep up to date with something
示例:
•
It's important to stay on top of current events.
及时了解时事很重要。
•
She always tries to stay on top of her emails.
她总是努力处理好她的电子邮件。
在 Lingoland 学习这个单词